Strange details about rockets/missions

[Bill Phil]

I'm following an online course on spaceflight over at edX, given by MIT teacher and ex-astronaut Jeff Hoffman. The course is really well done, however it's designed to be very basic (thanks to KSP I knew most of the stuff already), so it could be that he was mentioning it just as a side thing, a fun fact, and he didn't really care about the exactness of the statement. From my extensive 2-minute google research, I think you might be right. Thanks!

Btw, in the transcript it says Delta 2. But again, maybe they just wrote it down without paying too much attention, I'm guessing the guys that wrote down the transcripts probably aren't rocket scientists and didn't even think there could be a difference between 2 and II. Just guessing.

There are so many atlas variants, that it's very easy to get them all confused. I guess you can't really blame anybody, huh?

[Frida Space]

There are so many atlas variants, that it's very easy to get them all confused. I guess you can't really blame anybody, huh?

Absolutely. Especially in the old days of spaceflight. Thanks again.

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That happened once during a fueling operation (or some fueling test) for an Atlas-Agena. The result can be seen here at 0:23.

Another video (the video misidentifies the rocket as a Thor-Agena)-

Despite spilling the fuel (you can see it spill out as the rocket collapses), there was no fire AFAIK. I would imagine that the Agena stage either wasn't fueled or stayed intact, as if it had ruptured, it would have exploded, as it used hypergolic fuel and oxidizer.)

Wow, very cool! Thanks for sharing!

[Frida Space]

Another "strange" rocket/missile:

SPRINT, an Anti-Ballistic Missile (ABM) developed in the '60s which could reach Mach 10 in 10 seconds (or even in 5 seconds according to some sources, however that seems plain impossible)

I also heard scott manley mentioning a japanese Lambda rocket, which were unguided rockets used in the 60s-70s, however I can't find any launch videos or photos. Does anyone know where to find some?