151109-N-LV331-003 CAIRO, Egypt (Nov. 9, 2015) Secretary of the Navy (SECNAV) Ray Mabus, right, observes research operations during a tour of the laboratory at U.S. Naval Medical Research Unit 3. Mabus is in the area as part of a multinational trip to the U.S. Southern, Africa, Central and European command areas of responsibility to meet Sailors, Marines, and military and government leaders. (U.S. Navy photo by Mass Communication Specialist 2nd Class Armando Gonzales/Released)