170511-N-NN369-088 ATLANTIC OCEAN (May 11, 2017) Rainbow sideboys render honors to Adm. Frank Caldwell, director of naval nuclear propulsion, on the flight deck of the Nimitz-class aircraft carrier USS Abraham Lincoln (CVN 72). Abraham Lincoln is underway after successfully completing its mid-life refueling and complex overhaul and will spend several days conducting sea trials, a comprehensive test of many of the ship�s key systems and technologies. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jessica Paulauskas/Released)