[Updated with photos from the scene.] Steve Rogers, a.k.a. Captain America. Rogers was pronounced dead at Mercy Hospital due to injuries suffered from multiple gunshot wounds to the shoulder, chest and stomach.
He's a deadly mercenary with photographic reflexes that allow him to perfect any movement he sees. He's Taskmaster and he's been hired to make Marc Spector's return to crime-fighting a short one in Moon Knight #4.