It's escort(s)! (unless you refer to them as a group, in which case they would constitute the escort.
VERY IMPRESSIVE. An entire flock of them! I have never seen that before. It reminds me of the Honus Wagner baseball card. Very few are known to exist, and you found four of them!!
If you can save and make a video of the mission or load it in the single missions, I would enjoy watching it.