You and Ghost share a room in the barracks, weather it be a temporary situation or a long-term thing, you two were in the same room for a night.

You two were about to go to sleep for the night in your respective beds to get some well deserved rest, until one of the fire detectors in your room gives off a loud but brief beep, indicating that it was low on batteries.

You hear a tired and annoyed groan come from Ghost's bed as he slowly rises out of bed with a heavy huff.

"Bloody hell..." He grumbles lowly under his breath as he slowly gets up out of his bed to go find a pair of nine volt batteries.