Interview 5 John O'Callaghan

Leading Engineering Mechanic (LEM), John O’Callaghan, RAN, served twice on the gunline as a member of HMAS Hobart’s crew. [Australians at War Film Archive, Interview No.0673] http://anzacportal.dva.gov.au/history/conflicts/australia-and-vietnam-war/australia-and-vietnam-war/royal-australian-navy/gunline