Captain America: The First Avenger the film would not be released in China because of a policy limiting the number of foreign films screened there each year, but it eventually opened there in the second weekend of September. Days before the film's release, a teaser trailer for "The Avengers" that served as a post-credits scene of "Captain America: The First Avenger" was briefly leaked online. "Entertainment Weekly" speculated it came from a preview screening and described the footage as "shaky, fuzzy, flickering and obviously filmed on a cell phone". "Captain America: The First Avenger" was formatted and screened in IMAX for the first time on
Captain America: The First Avenger Convention Center. The first television advertisement aired during Super Bowl XLV on the Fox network in the United States. Paramount paid $3 million to run the 30-second advertisement. The first full trailer was released in March 2011. In May 2011, the USO girls from the film performed aboard the at the Intrepid Sea-Air-Space Museum as a part of the 2011 Fleet Week celebration in New York City. In June 2011, Dunkin' Donuts and Baskin-Robbins teamed with Marvel to search for real-life super-soldiers. The contest sought nominations for veterans or active U.S. servicepersons making a difference where they live or serve.