Steve Rogers, Bucky Barnes, and Gabe Jones race across the roof of the speeding Hydra train, the wind whipping past them in the snowy mountain pass. Steve and Bucky climb down a ladder, slipping into one of the train cars.

Inside, crates of weaponry line the shelves. Bucky advances, Thompson machine gun at the ready, his eyes scanning the shadows. Steve moves parallel on the other side, pistol drawn, glancing back at Bucky to ensure he’s covered.

As Steve steps into the next car, heavy doors slam shut, separating him from Bucky. Through the door’s window, Steve sees Bucky spin to face Hydra soldiers, his machine gun blazing as he returns fire.

In Steve’s car, a towering Hydra soldier levels a cannon-like weapon, its barrel pulsing with blue energy. Steve fires two quick shots from his pistol and dives behind a stack of crates as the soldier unleashes a barrage of energy bolts, splintering the crates.

Dr. Arnim Zola, watching on a video monitor, shouts frantically. “Stop him! Fire again!”

In the other car, Bucky, pinned down, trades fire with two Hydra soldiers at the far end of the aisle. He nails one, but shots ring out, forcing him to duck behind the shelves, bullets sparking around him.

Steve, gripping his shield, exchanges shots with the cannon-wielding soldier, the blue energy bolts scorching the air as he maneuvers for an opening.