Quartermaster 3rd Class Jaime Plym looks through a sextant on the port bridge wing of the aircraft carrier USS Ronald Reagan (CV

101215-N-0232G-061
SAN DIEGO (Dec. 15, 2010) Quartermaster 3rd Class Jaime Plym looks through a sextant on the port bridge wing of the aircraft carrier USS Ronald Reagan (CVN 76) as the ship departs homeport at San Diego. A sextant is a navigational tool used to measure the distance between two ships at sea. Ronald Reagan is underway conducting operations in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kevin B. Gray/Released)

101215-N-0232G-061
 SAN DIEGO (Dec. 15, 2010) Quartermaster 3rd Class Jaime Plym looks through a sextant on the port bridge wing of the aircraft carrier USS Ronald Reagan (CVN 76) as the ship departs homeport at San Diego. A sextant is a navigational tool used to measure the distance between two ships at sea. Ronald Reagan is underway conducting operations in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kevin B. Gray/Released)