Captain America [Steve Rogers]; Nick Fury; Dum Dum Dugan; Gabriel Jones; S.H.I.E.L.D.; Machine Man; The Avengers [Tony Stark [Iron Man]; Thor; Tigra; Black Panther; Hawkeye; Hercules; Spider-Woman [Julia Carpenter]; Black Widow [Natasha Romanov]; Wasp; Giant-Man [Hank Pym]; Namor, the Sub-Mariner; Quasar [Wendell Vaughn]]; Sensational Hydra (villain, introduction; a Skrull); Modam (villain); Hydra (villain)
Captain America battles Hydra in the Smithsonian. During the battle, he uses a replica of his original triangular shield to take down his foes. The museum curator gives him the shield to use.