"(FILES)This US Defense Advanced Research Projects Agency(DARPA) artists rendering shows the Falcon Hypersonic Technology Vehicle 2 (HTV-2). The US military had to detonate a hypersonic weapon seconds after lift-off on August 25, 2014 due to a technical problem, cutting short a flight test for the experimental project, officials said. The weapon is part of the Pentagon's ""prompt global strike"" program designed to build conventional weapons that could take out targets anywhere on the planet within an hour's notice.  AFP PHOTO / HANDOUT / DARPA   / FILES               = RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT ""AFP PHOTO / Defense Advanced Research Projects Agency(DARPA) "" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS =HO/AFP/Getty Images"
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