U.S. Navy Lt. Cmdr. Andreas Stiller, left, a Nurse Practitioner assigned to Naval Mobile Construction Battalion (NMCB) 133 Civic Action Team (CAT) Palau, teaches an Emergency Medical Technician (EMT) course to firefighters at Palau Community College in Koror, Palau, December 11, 2017. NMCB-133 is forward deployed, providing expeditionary construction and engineering (combat service support) to include horizontal and vertical construction; maintenance and operation of expeditionary bases and facilities; tactical sustainment bridging, humanitarian assistance through Construction Civic Action Details (CCAD), Civic Action Teams (CAT) and theater disaster response capabilities in the U.S. 7th fleet area of responsibility. (U.S. Navy Combat Camera photo by Mass Communication Specialist 1st Class Benjamin A. Lewis)