Excuse him for saving your ass, McCree. 76 gives the other man a harsh look...not that it can really be seen with his visor. But his posture combined with the little flickers of - whisps? not quite fire-flickers, they're too small for that, but it does seem like 76 is a little annoyed for more than one reason - says quite a bit before he takes another look around.

"Didn't realize friends tried to stab each other with pitchforks. Or is that some mercenary thing I wouldn't know about?"

Besides, he's already moving to kneel next to one and get a better look at it. Cover me is implicit in the action, though he's positioned to keep an eye on McCree in the process.