Supreme Headquarters Allied Powers Europe Command Operations has at its disposal standing forces such as: Airlift support for SACEUR's travels is provided by the USAF's 309th Airlift Squadron at Chièvres Air Base, Belgium. In 2012 and 2013, NATO underwent a reorganization of the military command, and the land component commands at Heidelberg and Madrid were deactivated, the maritime component command at Naples was closed and the air component command at Izmir also shut down. Today Allied Command Operations (ACO) is one of the two strategic commands of NATO (the other being Allied Command Transformation (ACT). Under this structure, there are two joint force operational headquarters
Supreme Headquarters Allied Powers Europe Brunssum, The Netherlands, and AFSOUTH in Naples. After much discussion within the Alliance, ACE's three-command system was reduced to two commands covering the same area after 1996, one for north of the Alps and one for south of the Alps. The United States had wished to retain three commands, arguing that 'the span of control might be excessive.' It was feared by Pentagon officials at the time that if the two-command structure was adopted, some functions at the MSC level would have had to be moved 'downward' in the new structure. But while the United States eventually had to give