Coast Guard Petty Officer 2nd Class Graham Sahli, a coxswain at Coast Guard Station Merrimack River, radios in a Green, Amber, Red (GAR) score to the communications watchstander prior to getting underway in Newburyport, Mass., on Dec. 20, 2013. The GAR model is used to calculate the total level of risk by assessing six separate elements and is used prior to every operational evolution. (U.S. Coast Guard photo by Petty Officer 3rd Class MyeongHi Clegg)
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