Editing Lockheed SR-71 Blackbird (section)

===Final retirement===
The reactivation met much resistance: the USAF had not budgeted for the aircraft, and UAV developers worried that their programs would suffer if money was shifted to support the SR-71s. Also, with the allocation requiring yearly reaffirmation by Congress, long-term planning for the SR-71 was difficult.<ref name="harvp|Graham|1996">{{harvp|Graham|1996}}</ref> In 1996, the USAF claimed that specific funding had not been authorized, and moved to ground the program. Congress reauthorized the funds, but, in October 1997, President [[Bill Clinton]] attempted to use the [[line-item veto]] to cancel the $39&nbsp;million (~${{Format price|{{Inflation|index=US-GDP|value=39000000|start_year=1997}}}} in {{Inflation/year|US-GDP}}) allocated for the SR-71. In June 1998, the [[Supreme Court of the United States|US Supreme Court]] ruled that the [[Clinton v. City of New York|line-item veto was unconstitutional]]. All this left the SR-71's status uncertain until September 1998, when the USAF called for the funds to be redistributed; the USAF permanently retired it in 1998.

[[NASA]] operated the two last airworthy Blackbirds until 1999.<ref>{{cite web |title=SR-71 Blackbird |url=https://www.nasa.gov/wp-content/uploads/2021/09/495839main_fs-030_sr-71.pdf?emrc=0612db |website=NASAFacts |publisher=NASA |access-date=5 September 2024}}</ref> All other Blackbirds have been moved to museums except for the two SR-71s and a few [[Lockheed D-21|D-21]] drones retained by the NASA [[Dryden Flight Research Center]] (later renamed the [[Armstrong Flight Research Center]]).<ref name="Jenkins"/>