Is it possiable to play two player black ops combat training with one gamer tag?

i wanna play xbox live with my friend, when he comes over, we wanna play combat training can we do two players like the same gamertag but one with a (1) at the end or someting?



helpIs it possiable to play two player black ops combat training with one gamer tag?you sign in. Then have your friend hit (a) when you are in the lobby. WHen he scrolls through the profiles to sign in, go to the bottom and select guest