Science editor Alan Boyle's blog: Commercial ventures have been taking lots of small steps toward the next giant leap in spaceflight — and the federal government is helping them out.
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Deadly helicopter crashes have killed dozens of U.S. Special Forces operators who flew risky missions to hunt insurgents and terrorists in Afghanistan and Iraq since 2001. Now the U.S. military is looking to equip its elite warriors' helicopters with airborne laser mapping capable of seeing through fog and dust to find safe landing zones.