Petty Officer 2nd Class Joseph Sippel, a aviation maintenance technician at Coast Guard Air Station Elizabeth City, lifts a part of the engine cowling of a HC-130 Hercules for Petty Officer 2nd Class Michael Mckinney, an avionics electrical technician, during a maintenance cycle, Monday, July 29, 2013. Maintenance is required on all Coast Guard aircraft based on the number of hours flown to keep the aircraft in good working order.