150126-N-ZF573-070 ATLANTIC OCEAN (Jan. 26, 2015) Capt. Daniel C. Grieco, commanding officer of the Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71), and crew speak with Capt. Barry "Butch" Wilmore, astronaut aboard the International Space Station during a video teleconference. Wilmore fielded questions from the Theodore Roosevelt crew during the event. 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. (U.S. Navy photo by Mass Communication Specialist 2nd Class Chris Brown/Released)