4. Natasha
Clint shivers slightly, the bare arms of his uniform not doing him any favors in the drafty (villainous lairs were always drafty, it was how you knew they were bad guys) embassy. Tony shifts slightly so that he's in front of the archer, his arc reactor maybe giving off a little bit of heat for the two to share.
Whatever.
A SWAT guy looks curiously at the closet that Clint and Tony are guarding, and lets off a little squeak as Clint starts to growl.
Tony dares to peek in the door once the guy is gone, and quickly has to shut the door again, due to the fear of cooing and waking the two inside.
Natasha had eventually fallen asleep as well, covered in Clint's jacket and, a couple hours later, Tony's extra SHIELD jacket, and Steve was still out.
Tony knew that Steve hadn't gotten a lot of sleep the last couple days, due to a series of superhero-related events that the billionaire hadn't paid much attention to previously. Now, though, Steve was out like a light, sleeping it off.
And sleeping some more.
Tony leaned against a pole as he pulled up Flappy Birds on his helmet, sending a signal to Clint's watch so that the two could play a modified two-player version.
A mousy CSI tech glanced at the cupboard, and Tony raised an eyebrow.
"Move along."
He said.