A U.S Navy sailor wears the JCREW signal jammer in 2014. Australia plans to buy as many as 850 JCREW units. Photo courtesy of U.S. Navy.

A U.S Navy sailor wears the JCREW signal jammer in 2014. Australia plans to buy as many as 850 JCREW units. Photo courtesy of U.S. Navy.

Northrop Grumman Corp...

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