The Air Force has designated the Air Force Research Lab’s Active Aeroelastic Wing flight demonstrator the X-53. An AFRL release notes that this is the first X-plane initiated within the Air Vehicles Directorate since the X-24 lifting body concept. The AAW flight demonstrator, a joint project of AFRL, NASA, and Boeing, is an F/A-18 highly modified to exploit aeroelastic effects normally considered anathema to aircraft performance. AFRL officials say the X-plane designation lends the program more import.
The Space Development Agency says it’s on track to issue its next batch of missile warning and tracking satellite contracts this month after those awards were delayed by the Pentagon’s decision to divert funds from the agency to pay troops during this fall’s prolonged government shutdown.

