This was my second day on PRBF2 and I should be practicing with bots in co-op because I don't know the game and things like are bound to happen. I teamkilled a tank while I was on TOW system. I accidentally teamkilled because I was trying to kill an enemy infantry men who was close to some smoke with my TOW launcher but when I fired a friendly tank drove through the smoke and the missile hit the tank instead of the enemy infantry. In addition, my game volume wasn't working so I couldn't hear the tank driving through the smoke. I'm very sorry for what I've done and I hope you will forgive me.