GENERAL'S TALK U.S. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, listens as Colombian Gen. Alejandro Navas, commander of Colombia's armed forces, speaks on Joint Task Force-Vulcano near Tibu, Colombia, March 27, 2012. Dempsey visited Colombian troops and engineers, and the U.S. troops who helped train them. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 392578-Z-PIJ05-586.jpg Photo Gallery