Peggy Carter (Hayley Atwell) gets reunited with her old wartime team, the Howling Commandos – which means a visit from “Dum Dum” Dugan, who’s played by Neal McDonough. He’s already played that character on film in Captain America: The First Avenger and, in flashbacks, on TV’s Marvel’s Agents of S.H.I.E.L.D. Tonight, he hits the trifecta.