During the 1960s and 1970s, the hub for most military charters was Travis Air Force Base (AFB) and McChord Air Force Base on the west coast and McGuire Air Force Base, New Jersey and Charleston Air Force Base, South Carolina on the east coast. These bases connected to a number of foreign hubs, which included Yokota Air Base in Japan and Rhein-Main Air Base in Europe. Starting in the 1980s the military shifted many of its domestic hubs from military bases to commercial airports to better integrate its transportation network with scheduled airline service, thereby avoiding the logistical headaches of transporting passengers between airports and air bases. By 1984 McGuire AFB was replaced with Philadelphia International Airport, and Charleston AFB was replaced with Charleston International Airport. By 1997, Philadelphia was replaced with Baltimore-Washington International Airport (BWI), Maryland and Charleston International Airport replaced with Atlanta, Georgia.