WORLD NEWS & ANALYSIS
Record for Rocket Sled
COLORADO SPRINGS and LOS ANGELES A rocket sled propelled a 192-lb. Missile Defense Agency payload to Mach 8.41 (9,465 fps.) at Holloman AFB, N.M., on Apr. 29, setting a world’s land speed record. The test run also capped Holloman’s five-year, $20-million Hypersonic Upgrade Program, which significantly improved the 26-in.-gauge, high-speed track’s hypersonic-testing capabilities in support of an upcoming missile defense warhead program.