The North American XB-70 Valkyrie is rolled out at Palmdale, Calif. Designed to fly at three times the speed of sound and at altitudes above 70,000 feet, the XB-70 is originally planned as a manned bomber, but funding limitations allow for only two aircraft, to be used strictly for testing and research.
Active-Duty Airmen only have a few days left to submit an official waist-to-height ratio into the Air Force’s new online application. But the service clarified July 23 that this first body composition measurement is not meant to be scored as part of the new Physical Fitness Readiness Assessment, or PFRA