YORKTOWN, Virginia (July 25, 2002)--Machinery Technician (MK) "A" students at Reserve Training Center Yorktown works on the repair of an outboard motor. The largest rating, MK offers opportunities for assignment at every Coast Guard cutter, boat and shore station. They train as a technician, manager and leader. They are knowledgeable in all areas of machinery operation and maintenance from internal combustion engines (gas/diesel gas turbines) to environmental support systems (heating/ventilation/air conditioning), hydraulics, basic electricity and areas of hazardous material recovery and control. USCG photo by Telfair H. Brown