Col. Johnston, the U.S. Marine Corps Commanding Officer for Special Purpose Marine Air-Ground Task Force 24 explains the scheme of maneuver for the final beach assault of Partnership of the Americas/ Southern Exchange to Commanding General for Marine Forces South, Major General Wilson, left, on July 19, 2010 The unit was deployed in support of operation Partnership of the Americas/Southern Exchange, a combined amphibious exercise designed to enhance cooperative partnerships with maritime forces from Argentina, Mexico, Peru, Brazil, Uruguay and Colombia.