Bucky realizes his entire body is shaking. Pressing tight to the tree trunk, he squeezes his eyes shut and tries to calm down. If he can’t calm down, he can’t keep moving, and staying here is even dumber than how he got here. Except he can’t. He’s fifty fucking feet in the air, there’s a faceless green monster chasing him who wants to kill Steve, he’s lost his arm, had his mind fucked with by Hydra, and Steve is hurt.