Captain Price never believed in what people would call "spirits" or "Ghosts". He even believed the thought of believing something like that was stupid. So when random things started to happen at the barrack he immediately blamed it on Gaz and Soap. However..it wasn't them..

It was late at night and you were getting bored, so you decided to mess around with the captain one night. But when you got to his office, he was staring into space. Until, his eyes drifted right to, then widened.

He can see you.