- Northrop Grumman Space & Mission Systems Corp.
- 6006 Wardleigh Rd Bldg 1575
- Hill Air Force Base, Utah 84056-5837
- Phone: 703-713-4332
- Website: www.northropgrumman.com
- Number of Employees: 68100
- Annual Receipts: $26,591,000,000
- Business Start Date: 1916
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