BALANCE BEAMERS U.S. Army Spc. Patrick Chittock, left, and Sgt. Salvador Gutierrez navigate through the obstacle course during the Pre-Ranger Course on Fort Irwin, Calif., May 18, 2009. Chittock is assigned to Headquarters and Headquarters Troop, and Gutierrez is assigned to F Troop, 2nd Squadron, 11th Armored Cavalry Regiment. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 963123-M-CQG73-376.jpg Photo Gallery