Anderson Cooper reacted like a pro when a bomb fell in the middle of his CNN broadcast Sunday night.

Discussing the recently-reported fatalities, Cooper instinctively ducked forward and said “woah!” as the bomb was heard from where he was reporting in Gaza.

Taking only a few moments to collect himself, Cooper continued in his usual measured tone: “Well, that was a rather large explosion…”

Looking behind him, Cooper added that he couldn’t see where exactly the bomb landed, but that it set off a number of nearby car alarms.

“That was probably the largest explosion that we’ve heard just in the past hour– there have been a number of explosions in the past hour or two, but that one was pretty loud,” he said.

Watch the clip, via Mediaite:

(H/T: Mediaite)