150205-N-SB299-310 ATLANTIC OCEAN – An F/A-18C Hornet, assigned to the Thunderbolts of Marine Strike Fighter Attack Squadron 251, launches off the flight deck of the Nimitz-class aircraft carrier USS Theodore Roosevelt. Theodore Roosevelt is underway participating in composite training unit exercise, which tests the Theodore Roosevelt Carrier Strike Group's ability to effectively react to real-world scenarios and perform as an integrated unit.