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In page Boeing KC-135 Stratotanker:

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  • Republic of Singapore Air Force operated 4 former USAF KC-135R tankers, first delivered September 10, 1999;[1] they were occasionally used as VIP, aeromedical transports[citation needed] and military support.[2] The aircraft were retired in June 2019, having been replaced in service by 6 Airbus A330 MRTTs. They were subsequently purchased by private US defence services company Meta Aerospace in October 2020.[3]