150309-N-IG780-154 GUANTANAMO BAY, Cuba (March 9, 2015) — Gas Turbine System Technician (Electrical) 3rd Class Tyquail Williams takes a fuel sample to test for impurities on board guided-missile frigate USS Kauffman (FFG 59). Kauffman is currently underway in support of Operation Martillo, a joint operation with the U.S. Coast Guard and partner nations within the 4th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Shane A. Jackson/Released)