"The walls here are heavily reinforced if you want to practice with live ammunition." Steve ignores the rest of the targets that pop up and disappear around them, walking to the edge of the room so that he can knock on the wall. It's made of a metallic alloy that's intended to stop just about anything that pierces it or smashes against it. Steve imagines that Mjolnir would still be able to make a dent, but a bullet shouldn't be a problem.

The simulation ends not long after that, and their score (which obviously is close to zero) appears in holographic numbers in the air near the center of the room. It's also on the screen, with an option to repeat the simulation or program a new one showing below it.

Steve figures that Peggy has the basic idea at this point, though. He moves back toward her and bows his head. "So yeah, feel free to make use of the facilities at any time."