At some levels, targets will pass in front of large exhaust fans. It’s ideal for body disposal since no one can find the deceased once the player has finished. Using a stray bullet, you can spook a guard and cause him to investigate the fan. As soon as the guard begins checking, shoot him and fire at the fan’s control panel. Thus, the body will fall from the roof and remain invisible for the remainder of the level, allowing the players to continue playing.