SAN FRANCISCO - Coast Guard Petty Officer 3rd Class Zach Graham, an aviation maintenance technician at Air Station San Francisco, is one of the eight aerial gunners trained to used the rifles on board the MH-65 helicopters, here, Friday, June 12, 2009. The armed helicopters and aerial gunners are a few of the tools the Coast Guard can utilize to stop a potential terrorist attack and save lives. 090612-G-7265M-2012 (U.S. Coast Guard photo/PA3 Pamela J. Manns)
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