Retired Staff Sgt. Bradley K. Gruetzner explains his prosthetic arm to servicemembers at Al Faw Palace, Camp Victory, Iraq, June 21. Greutzner, along with five other soldiers, have returned to Iraq to visit forward operating bases to witness the changes that have taken since their injuries. They are part of a pilot program, "Operation Proper Exit." Greutzner was injured May 26, 2007, by an improvised explosive device while traveling in a convoy 15 miles north of Baghdad.