Mention of dimensional dust has John's attention and he's careful to secure what he can from his trenchcoat into a glass vial before it's tucked away again. He's familiar with the razzle dazzle Harkness is about, charm to disarm, but there's something hard underneath. Like biting on tinfoil.

Peter is willing to trust the new arrival and reports to Jack anything he'd seen while exploring.

"Steve and I can check the lower level." They know one another's patterns in a fight and Bucky needs just a minute alone with him. "I've got the tracers active and I'll call in if we find anything weird."

Because that's what he does now.