The sequel to "Captain America" is filming in the District this month, starting on Sunday when production closed down Roosevelt Bridge twice to take aerial shots. Although a crowd gathered to catch a glimpse of the filmmaking, not much more was visible than a helicopter flying overhead.

Still, keep an eye out for possible sightings of stars Chris Evans (the Captain), Scarlett Johansson (Black Widow) or Anthony Mackie (the Falcon) around town the week of May 13 to 16, when "Captain America: The Winter Soldier" -- filming under the not-so-secret name "Freezer Burn" -- has put out a casting call for background extras, especially children, through the Maryland Film Office.