SpaceX pushed “sniper” theory with the feds far more than is publicly known

llanitedave

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If nothing else, allowing things to go south from time to time has made it possible for SpaceX to advance as fast as they have (compare to old space where failure is a political problem and thus more or less kills any kind of innovation or change). SpaceX is first after the early soviet days of rocket development to apply this approach and results (as back then) are excellent. Musk gave SpaceX political cover for those failures and allowed it to overtake everyone in a ridiculously short period of time.
Compare that to the insane politics of ESA and Ariane development. We are basically regressing...
The "move fast and break things" approach has certain advantages when it's applied to hardware development. When applied to human institutions and populations, it's criminally catastrophic.
 
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Snark218

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I don’t think elon gets enough sleep. I think that is part of the reason for his crazy ideas. Plus he has a form of Aspergers that causes people to shout out things randomly. Well they don’t just shout out things randomly, they THINK of a lot more things randomly than they say out loud or text.
Not only do we have no actual reason to think Elon is actually on the autism spectrum, this is also not how autism fucking works, and "Aspergers" is not even a diagnosis anymore. It is not necessary to retreat to ableist pop psychology to explain all the ways he's an asshole.
 
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llanitedave

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I was wondering how long it would take for some idiot to claim that Musk has Aspergers. 4 pages. That's a lot slower than it used to be, maybe the message is getting through that Musk is self-diagnosed and, by the way, Aspergers is no longer a diagnosis.
Plus, the person is confusing Aspergers with Tourette's.
 
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This boneheaded maneuver is classic (a) Musk or (b) Trump. NEVER THINKING AHEAD is his MO. And since it was dropped, I wonder exactly who talked the moron down from that idiotic position, since he's been known to keep hammering on things long after they're dead and buried.
I modified your terrific post (bold) and refashioned it in the form of a multiple choice exam question.

(a) or (b)?!;)
 
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Elon Musk also spent 50 grand on a private investigator to allegedly look into the professional rescue diver he'd called a "pedo-guy" for no reason, and see if there was any substance to his own baseless allegation. This all happened after the rescue diver had waved off Elon's stupid steel coffin to rescue the trapped Thai soccer team from an underwater cave.
Except, it wasn't Musk's Idea, it was the idea of the diver's actively working to save those kids, and was asked to continue it by Rick Stanton himself. They still wanted it even after Plan A was working.

Those other Diver were asking Vern Unsworth, the man Elon insulted, to basically stop the commentary, because he:

"isn’t a cave diver, had minimal firsthand knowledge of the rescue’s dive path, had made an incorrect initial prediction that could have nuked the rescue effort, had no unique knowledge about where the trapped kids were (and was mistaken in his guess, which he later lied about), was wrong about Musk’s sub and his having been asked to leave the cave, and when put under oath cited his sub claims entirely to a YouTube video."

Not excusing Musk's actions at all, Unsworth didn't deserve the accusation. But Unsworth was a bad actor, getting in the way of the plans being put together by the divers at the scene.

https://savingjournalism.substack.com/p/the-real-thai-cave-rescue-pt-1-elon
 
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D

Deleted member 1085921

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Nitpick: Most rockets wouldn't blow up, just spring a leak. And possibly deflate, if relying on tank pressure for structural rigidity (see original Atlas).

As for "idea"... there's nothing theoretical about hitting targets that size at extreme ranges. Even if no one's hit a rocket that way, there's plenty of confirmed hits on smaller targets at larger ranges with high-caliber sniper and anti-materiel rifles.
I said "blow up" because that's the context, but I appreciate your support of my point: nobody ever has blown up a rocket by sniping it! It wouldn't even work!

As for hitting a target, that's not in question so don't imply it. However an accidental miss would be potentially problematic. Talk about reading into things incorrectly…🙄

Again, blowing up a rocket with a sniper rifle is bad military science fiction no matter how many broadsided barns you can hit with a rifle. And the risk of trying to do something like this and being caught is not worth it. There's no reason to try in the first place.
 
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Rockchurch

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So what was this flash? If the FBI believed there was no evidence -- sure, they would know -- but what was this identified as?

Did you notice that your comment (and not only yours) assumes there was a suspicious flash?

You heard a SpaceX claim with no evidence or contextual information, and seem to have assumed the claim was true. Then your first question was why the FBI discarded the flash as evidence that they may or may not have identified.

Assumptions are sneaky.

Maybe your first questions should have been about evidence for a suspicious flash.

@EricBerger owns some responsibility for these assumptions. The article isn't very discerning about repeating what is ultimately an unsupported SpaceX claim (which was originally "a shadow then a white spot" on a video).
 
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I don't think it's power that's driven him mad but a long history of working (by his own admission) 16 hour days. That might theoretically mean 8 hours of sleep, but we all know you don't go straight to sleep after stopping work. He's also spending time on "not work" things, which means that my guess is that he's been getting consistently less than 6 hours of sleep a night for decades now. That's near guaranteed to result in issues.
Maybe it's the sleep deprivation. Some are cut out for that, like Lt. Col. John Paul Vann, who in the book "A bright shining lie" was comfortable with 4 hrs sleep per day. And he had his personal demons.
 
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Dtiffster

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The helium is, I suspect, loaded as a supercritical fluid at about 400 bar and as cold as they can get it by cooling with a N2 evaporator, which is probably about 40 or 50 K.

But when it expands into the empty COPV, it will initially warm by about 20 K. As the COPV fills, the warming will decrease until it's near the load temp.
The 20K temp rise is just from JT expansion to a very low pressure. But as it's filled although JT expansion will be less you also have to take into account the flow work being done. With an initial temp and pressure of 40 K and 400 bar, respectively, and an initially empty vessel that leads to a final temp of 100 K if adiabatic. Obviously this isn't fully adiabatic, you'd be boiling some LOX at that temp but it's not so hot that you are worried about things failing.

On the other end of the spectrum if it was 300 K and 400 bar, the final temp is 535 K. That's more in the neighborhood of where they started, and why you'd want to do the filling slowly with the COPVs immersed in LOX.

The issue though is again that while I assumed, like you apparently, from everything previously stated about the problem that they were closer to the former situation, Eric's comment in this article make it sound like they were experiencing the latter. If he's correct that the liner buckled from heat it doesn't sound like the helium was chilled to cryo temps before being loaded, and therefore wouldn't be cold enough to freeze LOX in the wrap. I really don't know if Eric's understanding was mistaken or we've been told the wrong case of failure this whole time, but there does seem to be a contradiction.
 
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Jim Salter

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This is just one of the reasons why no, I don't feel like the "smart money" is to bet on Elon Musk. That's been apparent even before he decided to put together a crack ket team of racist 4chan script kiddies to dismantle the government from the inside out.
Or, if you prefer, a "crack ker" team... the GOP side of Congress is more diverse than DOGE is. Which is a WILD ass statement IMO, but here we are.

1746473058324.png
 
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As for hitting a target, that's not in question so don't imply it. However an accidental miss would be potentially problematic. Talk about reading into things incorrectly…🙄
It wasn't hard to read that into your comment, especially given the degree of passive-aggressive snark commenters like to throw at Musk while trying to appear unbiased and reasonable.

And the near-miss wouldn't be very "problematic", especially compared to a hit -- the areas around the SLCs are pretty darn empty -- any such miss probably would have carried on out into the empty country and never be found. Just aiming higher or lower on the F9 would have generated hundreds, if not thousands, of yards of difference in the long axis of the impact ellipse.
Again, blowing up a rocket with a sniper rifle is bad military science fiction no matter how many broadsided barns you can hit with a rifle. And the risk of trying to do something like this and being caught is not worth it. There's no reason to try in the first place.
Similar to the Hollywood meme of shooting gas tanks on cars.

That said, SpaceX did actually test the sniper theory IIRC, and was able to duplicate the effect, including the explosion. Though I can't speak to just how high-fidelity the test was, relative to the sniper theory.
 
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hansolo

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So in summary, on the direction of Musk safety was intentionally ignored in the name of speed, then when a predictable accident happened he blamed some vague outside evil influence out to get him, not the clear and obvious mistakes.

/another person dies from "Full Self Driving"

shows Musk' mindset. Rapidly believes a lot of things too quickly without taking a pause and thinking things through. See his various twitter tweets.
 
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D

Deleted member 1085921

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Setting this nonsense conspiracy aside, my biggest takeaway from this is that Musk is totally fine with sacrificing astronauts to poor engineering and logistics. I'm glad Jared Isaacman has a bit more consideration for flyers – as difficult & deadly as spaceflight already is, it necessitates precaution and care especially when the human element is involved.

This has always been one of the highest principles, at least since Apollo 1. Accidents, oversight, cut corners, and failures happen, but they don't need to be made more likely through recklessness and a callous disregard for human life.

Simply being rich and powerful doesn't create that mindset, but that mindset certainly enables certain kinds of entreprenuers and leaders. They don't need to be narcissists or sleep-deprived, it's really about their values and whether they make ethical considerations when making choices. They didn't break and start malfunctioning, rather POSIWID.

Move fast? Sure. Break things? Only if truly necessary. Bad policies leading to astronauts yet again dieing horribly in a deathtrap?! No!!!

That's happened too many times already. Space will doubtless claim more lives, but it cannot be due to a total disregard for human life. That's not progress, that's not victory, it's infamy.
 
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jig

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Helium also like all gases gets hot when it is compressed, which when you are filling a pressure vessel the new gas coming in is compressing the current contents. So helium gets even hotter than most gases when you are trying to fill a pressure vessel with it. The solution is to load it slow and put the pressure vessel in a heat sink to take that excess heat away. When SpaceX used normal saturated LOX this was their solution, but they had to changed gears to do things fast when they went to densified propellants (see my comments above).
so... i think there's some additional things going on here.

the tank is in contact with LOX (90-55 K), and it's unclear what temp the He is coming in at, but the pressure inside the tank is always going to be less than the pressure inside the fill line (otherwise there's no fill), and if the He is coming in at a higher temp than the LOX, then whatever He is inside the tank is going to contract a bit (lower temp, lower pressure).

i don't know for absolute sure, but i doubt the incoming He is liquid (4 K) - it's just cold gas, depending on how it's getting chilled on the way in (source could be large LHe tanks, but it'll be transferred at some higher temp). the speed at which they're wanting to fill that tank just doesn't seem like it'd support liquid fill. too many heat leaks along many meters of fill lines.

anyway, when entering the tank, you'll have relatively high pressure He in the line before the entry valve, and relatively low pressure He downstream of the entry valve. as such, you will have some expansion at the valve, and that'll cool both the valve AND the He gas going through it. by multiple Kelvins, and with decent cooling power. this will make the valve and whatever it's thermally coupled to colder than its surroundings, and the spray of the He gas going through it will make whatever it contacts colder, in an asymmetric way, relative to the tank wall, even though there's other He gas in there mixing and also getting cooler.

so, i think if you try to use super pressure to fill that He tank quickly, you'll end up with an asymmetrically cold tank wall, probably most cold at the entry valve, and maybe significantly cooler at the opposite end of the tank, with not enough time for the wall temperatures to equalize. and, the temperature differences are probably enough to cause significant stress within the wall, probably enough to cause it to warp and then buckle.

in addition to that, the earlier reports were that the tank temp dropped low enough to freeze the surrounding LOX (so, sub 55K, even though surrounded by LOX at 90-55K) - and from the above, that frozen LOX would accumulate non-homogenously on the tank, and apparently within the wrappings. that would cause the temp differentials within the wall to increase (frozen LOX would act as a thermal insulator in those areas, lowering the heat leak, so allowing that wall area to get colder with the same applied cooling power), and the accumulating frozen LOX could also cause additional weirdly localized stresses within the wall of the tank, increasing the likelihood of buckling.

i think that fits the facts. i don't think He gas heating fits the logistics of filling a gas He tank at cryogenic temps, where solid LOX is forming on the outside of the tank due to something going on inside the tank. room temp He gas compression causes heating, but the majority of that is occurring before the gas enters the fill line outside the rocket. what's going on inside the tank is more of a fill than a compression (though depends a bit on the entry valve geometry).
 
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Variatas

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So what was this flash? If the FBI believed there was no evidence -- sure, they would know -- but what was this identified as?
It probably never went that far, but it's the FBI and a major defense contractor.

They could easily have just pulled the surveillance from the ULA building and verified there were no gunshots picked up at the time, and no one on the roof.

More likely an expert assessed the situation and found XYZ bits of evidence you'd expect from such a crime scene were not present, and ruled it out. If there's anything the FBI is expert on, it's ballistics and how to conduct a criminal investigation.
 
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It’s scary when someone with so much power REALLY likes wild, conspiracy theories.
Well, yes, but the actual cause of the explosion was pretty wild and crazy, too. Looking into all the possibilities takes quite a bit of knowledge and imagination.

How many people know that solid oxygen [mp. 54K], like sucrose, is triboelectic? (I.e., when you crush it, it sparks.) Or that loading up a COPV with supercritical helium [5K], at 5,000 PSI, might just freeze ambient oxygen and crush it in the carbon-fiber windings? Oxidizer, fuel, energy...
 
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I work in VFX. It's not uncommon for there to be small, one pixel flashes here and there for us to paint out. Presumably cosmic rays or similar. Maybe like one or two per ten thousand frames?
Yeah, I hesitated a bit before replying with that because I was way more up on video tech back in the days when tubes were giving way to CCDs but I don't see any reason why the newer stuff wouldn't still be affected by random particles zipping through. And for that matter there's all kinds of steps between the sensor and the recorded video file. Heck, I wouldn't be surprised if pixels get lost to undetected software bugs every now and then.
 
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Midnitte

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So what was this flash? If the FBI believed there was no evidence -- sure, they would know -- but what was this identified as?
I wouldn't be surprised if it was a wind-powered bird deterrent - wouldn't be surprised if the wind blast from the explosion caused it to move at about the right time....
This is notable because it suggests that Musk directed SpaceX to elevate the "sniper" theory to the point that the FAA should take it seriously. But there was more. According to the letter, SpaceX reported the same data and analysis to the Federal Bureau of Investigation in Florida.

After this, the Tampa Field Office of the FBI and its Criminal Investigative Division in Washington, DC, looked into the matter. And what did they find? Nothing, apparently.
I can only imagine that this would not unfold in the same manner today...
 
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so... i think there's some additional things going on here.

the tank is in contact with LOX (90-55 K), and it's unclear what temp the He is coming in at, but the pressure inside the tank is always going to be less than the pressure inside the fill line (otherwise there's no fill), and if the He is coming in at a higher temp than the LOX, then whatever He is inside the tank is going to contract a bit (lower temp, lower pressure).

i don't know for absolute sure, but i doubt the incoming He is liquid (4 K) - it's just cold gas, depending on how it's getting chilled on the way in (source could be large LHe tanks, but it'll be transferred at some higher temp). the speed at which they're wanting to fill that tank just doesn't seem like it'd support liquid fill. too many heat leaks along many meters of fill lines.

anyway, when entering the tank, you'll have relatively high pressure He in the line before the entry valve, and relatively low pressure He downstream of the entry valve. as such, you will have some expansion at the valve, and that'll cool both the valve AND the He gas going through it. by multiple Kelvins, and with decent cooling power. this will make the valve and whatever it's thermally coupled to colder than its surroundings, and the spray of the He gas going through it will make whatever it contacts colder, in an asymmetric way, relative to the tank wall, even though there's other He gas in there mixing and also getting cooler.

so, i think if you try to use super pressure to fill that He tank quickly, you'll end up with an asymmetrically cold tank wall, probably most cold at the entry valve, and maybe significantly cooler at the opposite end of the tank, with not enough time for the wall temperatures to equalize. and, the temperature differences are probably enough to cause significant stress within the wall, probably enough to cause it to warp and then buckle.

in addition to that, the earlier reports were that the tank temp dropped low enough to freeze the surrounding LOX (so, sub 55K, even though surrounded by LOX at 90-55K) - and from the above, that frozen LOX would accumulate non-homogenously on the tank, and apparently within the wrappings. that would cause the temp differentials within the wall to increase (frozen LOX would act as a thermal insulator in those areas, lowering the heat leak, so allowing that wall area to get colder with the same applied cooling power), and the accumulating frozen LOX could also cause additional weirdly localized stresses within the wall of the tank, increasing the likelihood of buckling.

i think that fits the facts. i don't think He gas heating fits the logistics of filling a gas He tank at cryogenic temps, where solid LOX is forming on the outside of the tank due to something going on inside the tank. room temp He gas compression causes heating, but the majority of that is occurring before the gas enters the fill line outside the rocket. what's going on inside the tank is more of a fill than a compression (though depends a bit on the entry valve geometry).
Helium is stored at the pad at high pressure and ambient temperature in racks of long, narrow cylinders.
 
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talent? no. big and convincing piles of other people's money? yes.
I agree he has next to zero engineering talent or many other things. But lying to people and getting them to believe that mars/fsd/tesla taxi/ai/whatever bullshit - thats a real skill he has. Imagine if he used it for something worthwhile instead of fleecing stupid investors or powering fascism. Though at this point the damage is done. The "returning to tesla" is just more lies and bullshit. Only a fool would believe that he is no longer a nazi. Thus there is only 1 solution for a nazi
 
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OrvGull

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So in summary, on the direction of Musk safety was intentionally ignored in the name of speed, then when a predictable accident happened he blamed some vague outside evil influence out to get him, not the clear and obvious mistakes.

/another person dies from "Full Self Driving"
It explains a lot about what Elon's doing now when you realize he assumes his decisions can never be wrong, and failure can only be explained by outside sabotage.
 
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Multiple factual errors, here. First, 50mm? That's a heck of a typo.
To be fair, a 50mm would be a good choice if you wanted to be real sure it exploded lol. One of these would be a little hard to hide tho https://en.wikipedia.org/wiki/XM913_chain_gun
I wouldn't be surprised if it was a wind-powered bird deterrent - wouldn't be surprised if the wind blast from the explosion caused it to move at about the right time....
I would be surprised, because that would require the pressure wave to move backwards in time...

You would see the flash, then 1-3 seconds later, the bullet would arrive, the explosion would happen, then 3-5 seconds later the blast wave would reach the putative shooting position. In your scenario, where the flash was caused by the explosion, you would be seeing the flash 4-8 seconds too late to have been the cause of the explosion.
 
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MoranJ2000

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My takeaway from this revelation is that Elon Musk was a very much a nutjob going back a decade or more-- he just hid it better back then.

This man is the walking, talking human manifestation of "fake it till you make it"; and not the benign version but the one that can and does get people killed in the name of what he sees as progress.

For more info, see, "Autopilot" and "Full Self Driving", Department of Government Efficiency, et al.
 
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I wouldn't be surprised if it was a wind-powered bird deterrent - wouldn't be surprised if the wind blast from the explosion caused it to move at about the right time....
I would, since the "flash" (whatever it was) occurred before the explosion. In fact, it was right there in the article, that the time between the flash and explosion was similar to the flight time of a high-caliber rifle round at that distance.

The sniper theory was pretty "out there," but so was the actual (well, "official" at least) culprit -- it must have taken some real imagination to figure out the actual cause. I've also seen it speculated that the 2015 Cargo Dragon in-flight failure might have been caused by this, rather than the "failed strut" that the investigation eventually settled on.

Given the sheer number of successful F9 launches since, either SpaceX really did find and fix the root cause, or the AMOS-6 incident was an extremely low-probability fluke. Given that SpaceX was able to duplicate the AMOS-6 explosion using test hardware, I'm strongly inclined towards the former.
 
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Steve austin

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Given that Musk's number one agency target was USAID, I would argue that he is responsible for many deaths already, and who knows how many more to come.
Of course, Musk retweeted a post that said Hitler, Stalin, and Mao didn’t kill anyone - it was the “civil servants“ that did. So by his view, getting rid of all the civil servants somehow saving lives.
 
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Faceless Man

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So in summary, on the direction of Musk safety was intentionally ignored in the name of speed, then when a predictable accident happened he blamed some vague outside evil influence out to get him, not the clear and obvious mistakes.

/another person dies from "Full Self Driving"
"Disruption!"
 
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dzid

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Of course, Musk retweeted a post that said Hitler, Stalin, and Mao didn’t kill anyone - it was the “civil servants“ that did. So by his view, getting rid of all the civil servants somehow saving lives.
It's even more insidious than that. From the Guardian:

MAGA’s era of ‘soft eugenics’: let the weak get sick, help the clever breed

At the heart of all Trump administration policies is ‘soft eugenics’ thinking – the idea that if you take away life-saving services, then only the strong will survive
 
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It was almost certainly the Kansas flu. The doughboys carried it to the Western Front, where lack of sanitation allowed it to spread like wildfire.
I recall there were 2 strains, St Louis, and Pennsylvania. It was the St Louis strain that spread around the world.
 
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Damn. I was hoping for some actual technical details of the investigation, rather than just a gov't report saying "we checked, move along now, nothing to see here". Maybe it is as simple as 'security cams show nobody on top of the building'. But it could have been something interesting about getting image analysis of the flash of light, or subtle system clock differences making the flash of light seem timed right, etc. It's all a big COPVout...

Or even simpler, the FBI got access to the roof and found that there was no place to take the shot from.

I’d love to know to the details too! I’ve learned enough about this kind of stuff to know that the methods used by the FBI are sometimes intentionally not discussed :)
 
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jig

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Helium is stored at the pad at high pressure and ambient temperature in racks of long, narrow cylinders.
thanks! do you know if it's cooled via heat exchange with the LOX line on its way into the rocket-side tank? or, is it just cooled by LOX boiloff directed around the He delivery line?
 
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