That's the challenge that awaits test pilots Kevin Christensen and Kevin Prosser in this delicate mission. Watch the fliers as they soar at speeds of up to 500 mph, relying solely on their ...

which is set in 1961 during the height of the US-Soviet space race and depicts the journey of a determined USAF test pilot, who is recruited by NASA for a daring suborbital mission in a X-15 ...