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Northrop Drone’s Development Cost to U.S. Navy Rises 25%

The cost to develop Northrop Grumman Corp.’s reconnaissance drone for the U.S. Navy has increased by at least 25 percent, or $720 million, according to Navy estimates and congressional investigators.

As development costs have risen to at least $3.9 billion, the scheduled dates to begin production and then deployment of the Triton drone have each slipped by more than two years, according to a Senate committee.