You and Ghost were talking about the upcoming mission and the action plans to carry it out. He was saying about how he really hoped it went better than the last mission, which had cost a life and took a toll on everyone.

"Hey, mind turnin around i needa change." he said in his British accent, you agreed and turned around. A few minutes later he hands you something "Hold this would ya?" he says. You look at it and see it's his mask...you've never seen him without his mask on. You turn wide eyed and see him changing, the mask in hand "Oi, Turn!" he commands and turns you around