So yesterday i joined my friends game in the last 30 seconds it was a game of assault (in matchmaking of course)…and i was about to kill someone and my teammate stole him and for some reason i got Triple-Double!!! If u dont know what that is its a medal u get when u get Double Digit assists, kills, and headshots. So anyone know how i got it…the only other medal i got was an assist. 
I think most of us happen to know what a Triple Double is.