Editing Boeing RC-135 (section)

===RC-135D Office Boy / Rivet Brass===

The RC-135Ds, originally designated KC-135A-II, were the first reconnaissance configured C-135s given the "R" MDS prefix designation, although they were not the first reconnaissance-tasked members of the C-135 family. In 1962, they were delivered to [[Eielson Air Force Base]], Alaska as part of the Office Boy Project. Serial numbers were 60–0356, 60–0357, and 60–0362. In 1963, the aircraft began operational missions. These three aircraft were ordered as KC-135A tankers, but delivered without refueling booms, and known as "falsie C-135As" pending the delivery of the first actual C-135A cargo aircraft in 1961.<ref name="clubhyper.com">{{Cite web |last=Heilig |first=Jennings |title=C-135 Variants - Part Two |url=http://www.clubhyper.com/reference/c135jh_2.htm |url-status=live |archive-url=https://web.archive.org/web/20230528092107/http://www.clubhyper.com/reference/c135jh_2.htm |archive-date=28 May 2023 |access-date=2 February 2019 |website=clubhyper.com}}</ref>

The primary Rivet Brass mission flew along the northern border of the Soviet Union, often as a shuttle mission between Eielson and [[RAF Upper Heyford]], Oxfordshire, and later [[RAF Mildenhall]], Suffolk, UK. The RC-135D was also used in Southeast Asia during periods when the RC-135M (see below) was unavailable. In the late 1970s, with the expansion of the RC-135 fleet powered by TF33 turbofan engines, the RC-135Ds were converted into tankers, and remain in service as receiver-capable KC-135Rs.<ref name="clubhyper.com" />