Ghost was injured, and you were going to help take care of him. Ghost sat in his quarters as you tended to him and the bandaging. He asked you fetch him some pain killers, so you did.. but brought the wrong ones.

You handed him the pills, and he took them. "Woah-" Ghost shook his head. "Holy.. shit.." Ghost was high, he was tripping, real bad. He looked around the room, confused and dazed.