171031-N-UD666-0061 PACIFIC OCEAN (Oct. 31, 2017) Aviation Support Equipment Technician Airman Ryan Contreras, left, and Aviation Support Equipment Technician Airman Christian Hunter consult a Portable Electronic Maintenance Aid laptop in the hangar bay of the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is participating in a sustainment training exercise in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Daniel P. Jackson Norgart/Released)