he who hesitates is toast

Steve hangs grimly on, focusing on his form, focusing on keeping the metal arm down. He presses the bone of his forearm into Bucky's vein, blocking the flow of blood and cutting off his air, until Bucky goes limp, the card sliding from his hands.

Based on everything he's seen so far, he doesn't think Bucky's faking. He's like a dog with a bone, unable to stop himself from pushing forward. Steve lets go, hoping against hope that he hadn't hung on so long as to cause irreparable damage, then snatches the chip and gets to his feet, sprinting for the control tower.