Keywords: 130321-N-TG831-445 (8589140617).jpg U S Navy ships assigned to Destroyer Squadron 15 at Naval Base Yokosuka Japan sail in formation with South Korean navy vessels March 21 2013 in the Yellow Sea during exercise Foal Eagle 2013 Foal Eagle is a combined U S -South Korea field training exercise held annually in South Korea to ensure the operational readiness of air space and cyberspace operations in the Korean theater of operations DoD photo by Mass Communication Specialist 3rd Class Declan Barnes U S Navy/Released https //www flickr com/photos/39955793 N07/8589140617/ 130321-N-TG831-445 2013-03-21 14 48 https //www flickr com/people/39955793 N07 U S Department of Defense Current Photos PD-USGov U S Department of Defense Current Photos https //flickr com/photos/39955793 N07/8589140617 2016-09-03 09 16 15 United States Government Work Yellow Sea United States Department of Defense |