Crewmen aboard the 418-foot Alameda-based Coast Guard Cutter Bertholf check a bottle of fuel for contaminates after refueling a Coast Guard Sector San Diego MH-60 Jayhawk helicopter during training off the coast of San Diego, April 8, 2014. Coast Guard air and cutter crews frequently train together to maintain proficiency. (U.S. Coast Guard photo by Petty Officer 3rd Class Connie Terrell)
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