Boeing has been awarded a USD9.4 million contract modification to continue refining its design of the experimental vertical take-off and landing (VTOL) Phantom Swift X-Plane, according to a 26 August Department of Defense (DoD) announcement. The DoD's Defense Advanced Research Projects Agency (DARPA) awarded the funds for a 16-month option on an existing 7-month base contract, according to the announcement. "Boeing will continue to refine their design of the [VTOL] experimental aircraft," the DoD said. "Specifically, Boeing will complete the following mile- stones: system definition review; interim progress review; and preliminary design review."
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