President Barack Obama conducts a press conference

President Barack Obama conducts a press conference in front of the Navy's “Green Hornet,” an F/A-18F Super Hornet aircraft powered by a 50/50 biofuel blend, in a hangar on Joint Base Andrews Naval Air Facility Washington, Md., March 31, 2010. During the conference, the president announced additional measures to boost domestic energy production for the nation to include strategic efforts by the Department of Defense to enhance energy security. The aircraft is slated to conduct its first flight April 22, 2010, on Earth Day. (DoD photo by Mass Communication Specialist 2nd Class Kevin S. O'Brien, U.S. Navy/Released)