Targets not preserved in saved games

Here is one way to see the anomalous behavior:


 * 1) Start a new game of Doom II (MAP01) on I'm too young to die.
 * 2) When the program loads, you will be looking at two troopers whose backs are toward you. Ignore them for now; instead, walk west along the short corridor until you reach the balcony.
 * 3) Fire a bullet. Two grunting sounds will now inform you that you have gotten the troopers' attention.
 * 4) Save your game.
 * 5) Load the game you just saved.
 * 6) (Optional) Stand still for a minute or two and listen. One would expect to hear the breathing noise made by zombies as they walk around, but all is quiet.
 * 7) Carefully inch your way back along the corridor to the starting point, keeping your eye on the opening to the north. As you get into each trooper's line of sight, one of two things will happen:
 * 8) *If he is facing you, he will become aroused and start moving.
 * 9) *If he is not facing you, you will see him standing still.

So, even though the troopers became aroused in step 3, they "fell asleep" during step 5.