The Air Force's revamp isn't "an optional thing," Air Force Chief of Staff Gen. Dave Allvin said. "The strategic environment compels us to do this."
The new helmet gives added protection at the same weight of the current helmet.
The sea service spent billions of dollars to increase its weapons inventory. Now it has run into a major obstacle.
Machine gunners and snipers can "walk" rounds on target at long ranges with the optic.
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