Petty Officer 3rd Class Graham Smith, a machinery technician at Coast Guard Station Cape May, N.J., removes an oil filter from a 45-foot Response Boat—Medium at the station Monday, July 29, 2013. MKs are responsible for all areas of machinery operation and maintenance from internal combustion engines (gas/diesel gas turbines) to environmental support systems (heating/ventilations/air conditioning), hydraulics, basic electricity, and areas of hazardous material recovery and control. (U.S. Coast Guard photo by Petty Officer 1st Class Nick Ameen)