Maybe it was a testament to both of them being poor guards, assuming a little too much with Rumlow's current state both cuffed and omega, that he got the jump on Steve. Both Steve and Sam jerked up at the snarl, the lunge. Rumlow had the chain around Steve's neck throwing him back in a flash.

“Rumlow” Sam barked it, pushing up to his feet even as the resonate of his voice rounded with alpha tones filled the cabin.

The bond flooded open both ways at the same time and with it Rumlow was already leaving Steve, crawling across the brief space and Sam was there to grab him. He hauled him up against the front of the cabin back up on the bench, pressing close on top of him and caging him in. “You stand down.” It was hissed viciously in Rumlow's ear with the same tones. Attacking Steve was not acceptable.

The van lurched to a halt with that final crash, urging them closer for a second before it settled. He heard the front door open but didn't move, too caught up waiting for Rumlow's submission. His very breathing was ragged against the renewed flare of their bond. It didn't hurt but it did through sheer intensity. If they could just calm down it'd probably start feeling overwhelming good again.

So he radiated calm, pulled on a more controlled set of breathing.