Departing 18 August, she joined 6th Fleet at Rota, Spain, before sailing into Athens 1 September. There she joined DESRON 12 along with USS "Sampson", USS "Richard Byrd", USS "William Wood", USS "Manley", and USS "Vreeland". Following a month-long stand down, to settle crew and dependents in new housing, Barry began intensive Fleet operations. NATO exercises with Greek and Turkish ships; goodwill port visits to Italy, Spain, Turkey and Greece; and ASW training, highlighted by the surfacing of a Soviet Foxtrot-class diesel submarine on 11 January, continued well into 1973.