Jim Zortman, shown with models of existing and prototype unmanned aerial vehicles produced by Northrop Grumman, is site manager for the company’s Unmanned Development Center. Northrop Grumman has a local payroll of $446 million, according to the retired U.S. Navy vice admiral.

Jim Zortman, shown with models of existing and prototype unmanned aerial vehicles produced by Northrop Grumman, is site manager for the company’s Unmanned Development Center. Northrop Grumman has a local payroll of $446 million, according to the retired U.S. Navy vice admiral. Photo by Melissa Jacobs.

— Northrop Grumman’s local employees produce a variety of things for the U...

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