sentences:  On July 1, 2009 it was superseded by the Aerospace Defense Operational Strategic Command ().As a result of the air force reforms implemented on June 1, 1998, the Moscow Air Defence District of the PVO and the 16th Air Army of the VVS became a single entity, the Moscow District of the Air Force and Air Defense.According to Krasnaya Zvezda of 16 December 2002, the former Moscow District of the VVS and PVO was reorganised as the Special Purpose Command in September 2002.