RIVERINE ROUND U.S. sailors aboard a riverine patrol boat conduct a live-fire exercise as part of Amphibious-Southern Partnership Station 2012 in Matuntugo, Colombia, Nov. 11, 2011. SHARE: Download: Full Size (5.10906 MB) Tags: Week In Photos, Week In Photos Credit: VIRIN: 771379-D-ASK38-620.jpg Photo Gallery