Robert Downey Jr. and Mark Ruffalo share 'Avengers: Age of Ultron' set pics

Fans are getting their first official glimpses of Marvel's "Avengers: Age of Ultron," courtesy of co-stars Robert Downey Jr. and Mark Ruffalo -- but don't expect to see Iron Man, Hulk, Thor, Captain America, Black Widow, Nick Fury, Quicksilver or Scarlett Witch in action. These are basically just on-set selfies.