"Uhh," is the only response he can come up with before he unholsters his gun. "Get running the other way! I'll be right behind you."

He can't imagine this creature is friendly, but he won't start shooting unless it advances on them. Because what if it's just lost or out of sorts from being flung up in the air on this bit of dirt? Its day would just get worse if someone started shooting at it.

Of course, the benefit of the doubt doesn't work in McCree's favor today. The basilisk definitely has ill intent as it advances on the pair of them.