The 607th Weather Squadron (607 WS) of the U.S. Air Force has overall responsibility for planning, providing, and/or arranging weather support for the United States Army during armistice conditions in Korea. 607 WS and elements of the US Navy and US Marines support the Republic of Korea Air Force (ROKAF) Weather Wing, Combined Meteorological and Oceanographic (METOC) Officer (CMO) and subordinate squadrons during exercises and contingencies. The 607 WS commander is also the Joint METOC Officer (JMO) and the senior US METOC officer (SMO) for the Korean Theater of Operations (KTO).