When no further shots came and Steve started up, Natasha began to edge towards the stairs, gun in both hands, trained above. When she heard the sound of a gun hitting the floor, she started to run for the stairs, her gaze catching sight of a grenade passing inches from her cheek. This was really going to hurt, she knew, but she threw herself at the staircase, past the grenade, landing in the middle of them as the explosion came from below and behind her. For a few seconds, she kept her head down to avoid getting burned, though she knew some of her hair was singed by the near miss. Picking herself up a moment later, Natasha continued on up the stairs, stopping near the top as she saw the two men fighting above.