It looks split-screen
the way the boundary between the incident and the bay next door keeps moving around
Good to see the instructor was on his toes but what was that grenade made of? I'm surprised something didn't ricochet off the wall between the camera and the incident and catch either of them. At the beginning of the piece, you can see the side of the wall that they would see - there doesn't seem to be any blast absorbent measures in place.