Surprisingly, while a hug might have been met with even more surprise and probably a very tense Keith at first and then slowly appreciated, the arm touch does a lot to calm him down much quicker. It's more similar to the patented Shiro Shoulder Touch TM that Keith was used to from a good portion of his younger years than a hug would have been. It grounded him, dragging his attention out of his scattered and traumatized memories and back to Tommy, forcing Keith to raise his eyes back up again and look the other man in the eyes and truly process his next words.

There was a beat as Keith's pessimistic side argued that it was going to impossible to stop it... how could Tommy prevent it... and all these other questions... but he managed to curb it with a small sigh.

"I don't know if there's really any way to stop something like that, but-" and he did actually finally manage a small smile... weak, kind of sad, but genuine and there... "I appreciate the offer."

He took a deep breath and then quickly shook his head like he was trying to clear it.

"I'm sorry, man. I didn't mean to get all weird like that."