U.S. Army instructors assigned to 1st Battalion, 124th Cavalry Squadron, Texas Army National Guard, observe a Guatemalan Inter-Agency Border Unit (IABU) seting up a vehicle check point during an exercise at the Guatemalan military academy in San Juan Sacatepéquez, Guatemala, May 20, 2013. The U.S. Army worked with the U.S. Border Patrol to train the newly formed Guatemala IABU for the mission of interdicting the flow of illicit activities on the Guatemalan borders. (U.S. Army photo by Kaye Richey/Released)