Despite Northrop Grumman's decision to drop out of the Navy's MQ-25 carrier unmanned tanker program, Boeing continues to be focused on the competition, according to a top executive. Chris Raymond, who oversees Boeing's autonomous systems business within the company's defense group, told reporters at Boeing's Arlington, VA, office last week that "you can't let up for a minute." The Navy determined only four companies were eligible to bid for the competition: Boeing, General Atomics, Lockheed Martin and Northrop Grumman. Wes...