U.S. Navy Fire Control Technicians stand by during a General Quarters drill aboard the U.S. Navy Aircraft Carrier USS NIMITZ (CVN 68). The USS NIMITZ (CVN 68) is currently underway off the coast of Calif., conducting sea trials after successfully completing a six-month Planned Incremental Availability period. Aug. 31, 2006. (U.S. Navy photo by Mass Communication SEAMAN Emily Stroia) (Released)