"There's a whole fleet of 'em!"
That part doesn't seem to have gotten any attention. But the pilot who referred to to the "fleet of 'em" directed the other pilot to look at the "ASA", and he responded "oh my gosh!".
WTF was that all about?
To me, the footage focusing on the one indistinct shape isn't all that exciting. There must be something about infrared video, because that kind of footage is pretty common. And some of it more "UFO-y".
But "a whole fleet of 'em"? He speculates that they "must be drones". But a fleet of drones is still an extraordinary thing, especially at 25,000 feet.
Bet we never learn more about the "fleet" of whatevers.