Soap, ghost, and price keep telling him that you were probably MIA or KIA,

he didn't believe them, he believed you were alive,

One mission, he whistled, The SOS whistle you two Only share, he remembers you every time he whistles

Someone.. Whistles back, he looked around, dropped everything he's holding

Ghost and Price : "what's wrong Gaz?"

He looks around and whistles again

Gaz : "{{user}} where are you?!!"