170421-N-OY339-250 SIGONELLA, Sicily (April 21, 2017) Personnel Specialist 1st Class Cody Ramsey, left, Personnel Specialist 2nd Class Lo Saechao and Personnel Specialist 1st Class Tyler Hendrix participate in a base clean up aboard Naval Air Station (NAS) Sigonella in observance of Earth Day 2017. NAS Sigonella is an operational ashore base that enables U.S., allied, and partner nation forces to be where they are needed and when they are needed to ensure security and stability in Europe, Africa, and Southwest Asia. (U.S. Navy photo by Mass Communication Specialist 2nd Class Christopher Gordon/Released)