Petty Officer 3rd Class Geoffrey Kallimani, an avionics electrical technician at Sector Columbia River, unscrews a panel underneath an MH-60 Jayhawk helicopter inside the hangar at the sector's base in Warrenton, Ore., March 19, 2018.
Helicopters are temporarily taken out of service after every 200 hours of flight time for preventive maintenance.
U.S. Coast Guard photo by Petty Officer 1st Class Levi Read.
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