^“XQ-58A Valkyrie demonstrator completes inaugural flight”. 88 Air Base Wing Public Affairs, Wright Patterson AFB (2019年3月6日). 2019年3月7日閲覧。
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^“Kratos to launch XQ-222 Valkyrie, UTAP-22 Mako at Paris Air Show 2017” (2017年6月15日). 2017年6月15日閲覧。
^Rogoway. “More Details On Kratos’ Optionally Expendable Air Combat Drones Emerge”. The Drive. 2018年12月31日閲覧。
^Liptak (2019年5月22日). “‘Skyborg’ could let F-35 and F-15 fighter jets control their own companion drones”. The Verge. 2019年5月23日閲覧。
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^Four companies win contracts to build the Air Force’s Skyborg drone. Defense News. 24 July 2020.
^4 Companies Move Forward in Skyborg Competition. Air Force Magazine. 24 July 2020.
^Air Force Chooses Four Contractors To Compete For Skyborg Drone. Breaking Defense. 24 July 2020.
^AF Will Choose Skyborg Prototypes This Summer. Breaking Defense. 28 July 2020.
^These 3 companies will build prototypes for the Air Force’s Skyborg drone. Defense News. 7 December 2020.
^Three Companies Win New Skyborg Prototyping Contracts. Air Force Magazine. 8 December 2020.
^Valkyrie drone launches even smaller drone from inside payload bay. Defense News. 5 April 2021.
^Valkyrie UAS Launches Small UAS from Weapons Bay. Aviation International News. 6 April 2021.
^AFRL successfully completes XQ-58A Valkyrie flight and payload release test. Air Recognition. 6 April 2021.