FILE - In this March 24, 2010 file photo, a mockup of Northrop Grumman's Unmanned Aerial Reconnaissance System plane RQ-4 Global Hawk is on display at a public exhibition hall in Tokyo. Northrop Grumman Corp. said Wednesday, April 28, 2010, its first-quarter profit increased 20 percent, led by strong growth in shipbuilding.(AP Photo/Junji Kurokawa, file)