Ukrainische Spezialkräfte beseitigen 4 Russen und erfassen 1 in der Region Sumy

I am really curious to the protocol in handling this hostage. Like if shit hits the fan do they execute him?

I’m wondering. Forgive this question if it’s stupid but how come the first shot from the suppressed rifle sounds normal but afterwards they sound garbled and muffled like something is covering the camera? What tech/camera stuff is happening for that to occur?