The F-22 is the world’s most sophisticated operational fighter plane, and one of the most expensive. But due to an unexplained and potentially deadly problem that causes oxygen to drain out of the cockpit, pilots are refusing to be assigned to it. Air Force General Mike Hostage admitted that a number of F-22 pilots are refusing to fly the stealth fighter until it is... 

Zeroed in: The weapon, which could look similar to this Falcon HTV-2, left, was fired from Hawaii, glided south westwards through the upper atmosphere over the Pacific at 'hypersonic speed' before hitting its target on the Kwajalein atoll in the Marshall Islands - some 2,500 miles away. A hypersonic flying missile that can strike a target anywhere in the world...