DoD operated the Military Air Transport Service from 1948 to 1966.  It was DoD&#x27;s own airline, with routes to US military bases, using civilian-type equipment.  By the 1960s, civilian aviation was providing better service and using jets, so the MATS airline-type operations were shut down.  Since then, DoD does only tactical airlift itself; trips between routine points are commercial, sometimes using commercial charters.