[Sirius Lee]

What is the significance of this?

If you're into Aviation Porn, as I, I mean someone I know is, then it's everything.

Oh, Baby, show me what you got, Buffy. Nice Rack! Huma huma huma...

[pfflier]

Someone is doing this drama show to get hits. There is no such thing as an "emergency" takeoff but with BUFS, there are plenty of emergency landings.

This is, in fact, a composite video of many different instances of B-52s taking off.

There are no sirens, ever in any case, in the real world. I'll bet whoever created this video never saw a MITO.