It was during an escort part of a game and so knowing the path the NPC takes I set the turret in a corner to where the other team couldnt see it until they came out of the glass doors. What happens? Well the NPC comes out- Turret never fires at him - Enemy players come out - Turret doesnt fire at them either. The stinking thing scanned back and forth 6 TIMES!!! and never fired a single shot at an enemy player even though they were right on top of it.. eventually a stray grenade destroyed it.
I am now playing a Medic and Soldier.