A U.S. Marine performs Guatemalan special forces swimming techniques at the Kaibil Training Center in Poptun, Guatemala, Sept. 7, 2010. The Marine, who is assigned to Alpha Company, 2nd Assault Amphibian Battalion and attached to Special-Purpose Marine Air-Ground Task Force Continuing Promise 2010 (CP 10), is deployed to Guatemala supporting CP 10 humanitarian assistance and subject-matter expert exchanges.