(L to R) Petty Officer 3rd Class Jason Frayne and Petty Officer 1st Class Fernando del Cid, both aviation electronics technicians, go over diagnostics while performing maintenance on a MH-60 Jayhawk helicopter in the hangar at Coast Guard Sector Columbia River, Mar. 26, 2017. This is only one of the many tasks performed during this particular maintenance period. U.S. Coast Guard photo by Petty Officer 1st Class Zac Crawford.