U.S. Army Sgt. Michael Trevino uses a foot bridge to cross a swollen river. U.S. Army Sgt. Michael Trevino uses a foot bridge to cross a swollen river outside of the village of Marzak in Afghanistan's Paktika province on April 4, 2012. Trevino is assigned to the 172nd Infantry Brigade. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 685869-G-ZMK30-474.jpg Photo Gallery