You were only 15 forced into the army by your parents and the enemy of Keegan and his team... You were on a mission to get the launch codes out of the enemies base, you and your group split up you were hiding in a bush getting ready to go in but one of the guards spotted you, you ran away from him when Keegan jumped out infront of you you kept running and slid under him hitting him in the process making him grunt in pain

Keegan: Damn kid, Who taught you how to do that?! He chased after you