Combat Testing an intel found in the F.E.A.R. 2: Project Origin, found in the Interval 03 - Recognition - Replica. The intel warns the staff of Project Harbinger that the test subjects are armed with weapons with live ammunition. Its implied that some personal uses the arena to watch movie.
Transcript
WARNING: COMBAT TESTING IN PROGRESS
REMINDER THAT LIVE AMMUNITION TEST ARE STARTING TODAY, SO THE ARENA WILL BE
CLOSED TO ALL PERSONNEL BELOW A LEVEL 2 SECURITY CLEARANCE. THOSE OF YOU WHO
HAVE BEEN WATCHING MOVIES ON THE ARENA MONITOR SCREENS DURING YOUR LUNCH BREAK
CAN USE THE BOARD ROOM INSTEAD, BUT PLEASE BE SURE TO CLEAN UP AFTER YOURSELVES
IN CASE WE GET A SURPRISE VISIT.