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The Air Force will likely have high-speed, long-range and deadly hypersonic weapons by the 2020s, providing kinetic energy destructive power able to travel thousands of miles toward enemy targets at five-times the speed of sound.

“Air speed makes them much more survivable and hard to shoot down. If you can put enough fuel in them that gets them a good long range. You are going roughly a mile a second so if you put in 1,000 seconds of fuel you can go 1,000 miles - so that gives you lots of standoff capability,” Air Force Chief Scientist Greg Zacharias told Scout Warrior in an interview.

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