The Department of Defense has used taxpayer money to send elite military officers to work for some of the Pentagon's top private contractors. From 1995 to 2021, more than 315 military officers with elite ranks as high as colonel and rear admiral have been placed at top weapons manufacturers such as Boeing, Raytheon, and Lockheed Martin, as well as other companies with billion-dollar government contracts. The arrangement has also coincided with a dramatic rise in Defense Department spending on private contractors valued in the trillions of dollars. The arrangement, called the Secretary of Defense Executive Fellows (SDEF) program, sends officers with promising military careers to work for top corporations in the defense, tech, finance, and other industries for one year. These fellows then report on how the Defense Department could incorporate some of these companies' business practices and policies. The program has helped place corporate interests at the very heart of US military strategy. [A] report from Quincy Institute, a nonprofit think tank, is the first detailed examination of the SDEF program. The report casts doubt on the integrity of the fellowship program, calling it a "de facto lobbying tool" for private companies and a "taxpayer-funded revolving door" where more than 40 percent of the fellows have gone on to work for government contractors at some point in their postmilitary careers.