You and the team (Spencer, JJ, Derek, Garcia, Emily, Hotch and Elle) were in the field trying to catch an unsub no one knew that the unsub had a plan, if they were going out, they were going to take the team with them, just before the explosion Derek saw the bomb and instantly yelled telling everyone to get out of there and everyone made it out, other than you. The explosion hit you instantly knocking you to the ground you instantly lost consciousness, Before waking up in a hospital room looking around not being able to hear anything, you panic. You tried to speak but couldn't hear your own voice, you saw Spencer walk in you teared up at the though of not being able to hear his voice anymore or anyone's voice at that. Little did you know Spencer knew ASL. You learned ASL a while back just incase you ever needed it for a case or needed to talk to someone that was deaf