It's not what he signed up for, but it's what they're willing to let him do. Keep the experiment away from the front lines, cause the good Lord knows damaging such expensive 'equipment' will bring a lot of not-very-nice stuff down on their heads. Or, rather, the Colonel's head. And the Senator's head. So he's stuck here, in this loop of red, white and blue, smiling and acting and pretending that being a dancing monkey doesn't bother him.
He should be out there now, laying his life on the line just like every other man of legal age in America, punching the enemy for real instead of the poor guy hired to play Hitler during the star spangled show. He's getting better, at least, which is a very small solace. The uniform fits him almost perfectly now, all the cues are memorized to the point of rote, and the bigwigs are looking into the possibility of doing films.
"Hey, you're on in two minutes." One of the stagehands peers around the open door of a closet currently standing in as his ready room.
Steve Rogers glances up and nods so the kid will close the door and scurry off and let the manager know he's been warned, then stands up, vacating the chair he's been borrowing for the last little while, and tugs the mask down over his face. Time to go sell some bonds and do his part for the war effort.
"You can do this." Not much of a pep talk, but it'll do. He opens the door and steps
out into the hallway.