Call of Duty 4 - Killcam - 6 in 1

Killcam of me and 3 friends being killed. This was in a ranked search and destroy game. We did not know the guy on the other team. I was running down to hit a triple, not sure why the other did, it was not planned. Was not a sniper lobby either, as you can see somebody is using a M16. Also, the guy who hit the 6in1 gets killed by a grenade just as he hits the shot.