Captain America: The Winter Soldier a panel at 2013 San Diego Comic-Con International and presented footage from the film. In addition, Marvel had booths depicting a Smithsonian-type exhibit showing Captain America and the Howling Commandos from "Captain America: The First Avenger". At the end of the month, audiences were shown a glimpse of the film along with some of Marvel's other Phase Two slate of films at Disney XD's Disney Fandom event. In August 2013, Feige, Evans, Stan, and Mackie presented a clip of the film at Disney's D23 Expo. In September 2013, Marvel announced that it is again partnering with Harley-Davidson, continuing their relationship
Captain America: The First Avenger team of that name, and in November Johnston refuted speculation that the Sub-Mariner, an Invaders team-member in the comics, would be included. Johnston later explained that "the Invaders" had been discussed simply as a possible name for the squad of commandos Captain America leads in the film. Christopher Markus, one of the screenwriters, said the unnamed group was "called the Howling Commandos in the script, but no one says that out loud." The design as a whole tried to create technology that could be built in the 1940s, though with the added Cube technology in Hydra's case. Abandoned Nazi projects