Guatemalan Army Special Forces soldiers or "Kaibiles" observe how a U.S. Marine positions himself to post security during a jungle patrol exercise at Poptun Training Camp in Poptun, Guatemala, Sept. 11. Patrolling in jungle terrain was part of the subject-matter expert exchange between Kaibil soldiers and Marines of Special-Purpose Marine Air-Ground Task Force Continuing Promise 2010. - Guatemalan Army Special Forces soldiers or "Kaibiles" observe how a U.S. Marine positions himself to post security during a jungle patrol exercise at Poptun Training Camp in Poptun, Guatemala, Sept. 11. Patrolling in jungle terrain was part of the subject-matter expert exchange between Kaibil soldiers and Marines of Special-Purpose Marine Air-Ground Task Force Continuing Promise 2010.