U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, listens to a South Korean soldier brief him during a trip to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., right foreground, chairman of the Joint Chiefs of Staff, talks with U.S. Army Col. James Minnich, secretary of the U.N. Command Military Armistice Commission, during his visit to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., right foreground, chairman of the Joint Chiefs of Staff, talks with U.S. Army Col. James Minnich, secretary of the U.N. Command Military Armistice Commission, during his visit to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, receives a briefing from U.S. Army Col. James Minnich during a visit to the Demilitarized Zone dividing the two Koreas, Nov. 2, 2015. Minnich is secretary of the United Nations Command, Military Armistice Commission. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, receives a briefing from U.S. Army Col. James Minnich, secretary of the U.N. Command Military Armistice Commission, during his visit to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, speaks with U.S. Army Lt. Gen. Bernard S. Champoux, commanding general the 8th U.S. Army and chief of staff of the United Nations Command in South Korea, during a trip to the Demilitarized Zone dividing the two Koreas, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, signs a wall in the dining facility on Camp Bonifas after having lunch with U.S. and South Korean troops during a trip to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, receives a briefing from U.S. Army Lt. Gen. Bernie Champoux, commanding general 8th U.S. Army, and chief of staff for the U.N. command in South Korea, and U.S. Army Col. James Minnich, secretary of the U.N. Command Military Armistice Commission, during his visit to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, travels aboard a helicopter to the Demilitarized Zone that divides North Korea and South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique A. Pineiro)
U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, receives a briefing from U.S. Army Col. James Minnich, secretary of the U.N. Command Military Armistice Commission, during his visit to the Demilitarized Zone in South Korea, Nov. 2, 2015. DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique Pineiro)
A South Korean soldier stands guard in the Joint Security Area during U.S. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, visit to the Demilitarized Zone in South Korea, Nov. 2, 2015, DoD photo by U.S. Navy Petty Officer 2nd Class Dominique A. Pineiro (Photo by Petty Officer 2nd Class Dominique Pineiro)