Henry had already vomited into his pressure-sealed helmet by the time his ... but was still a little surprised the Air Force sent him back up to high altitude only six months after his incident.

The F-35 helmet ... feet of altitude. Diamonds are possible targets; circles, designated ones. The F-35 helmet-display In an August 2016 weapons test over Edwards Air Force Base, California ...

Browse a gallery of the U.S. Air Force's high-altitude balloon experiments and the researchers, scientists, and test pilots who made them possible.