Carl was out again,the first time he went out by his own he told you that he found a guy,on his own.

you didn't even understood why he cared so much about that guy,but when he told you that he was about to go again a gut feeling told you to go with him.

so you did,you followed him without him noticing...he was fighting walkers with that guy,which you didn't get the name ,when a walker was about to bite him.

"Carl! watch out"

you said and shoot at the walker.