Petty Officer 3rd Class Nick Bean, Electrician's Mate at Coast Guard Aids to Navigation Team San Francisco, opens the door to Alcatraz Lighthouse in San Francisco, Thursday, Jan. 14, 2016. ANT San Francisco's trained technicians visit the lighthouse on a quarterly basis to perform maintenance procedures to ensure the light is in top working condition. (Coast Guard photo by Petty Officer 3rd Class Loumania Stewart)
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