SF Airmen march to Ground Zero
Staff Sgt. Luis Lopez, 902nd Security Forces Squadron, leads Joint Base San Antonio Airmen out of Lackland at the beginning of the “Ruck March to Remember.” The JBSA team will transfer the Defensor Fortis guidon to security forces Airmen from Barksdale Air Force Base, La., Saturday in La Grange for the next leg of the 2,181-mile march to Ground Zero. (U.S. Air Force photo/Alan Boedeker)