US Navy fine tunes seafaring laser weapon and unmanned robocopters (video)

That electromagnetic railgun is cool and all, but it's not the Navy's only wargadget in progress. Apparently, the Armed Forces branch has also been working tirelessly to improve its ship-mounted lasers and autonomous helicopters since we'd last heard about them. The new laser prototype, in particular, is a beefed-up version of what we saw in 2013.

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