150430-N-AT895-069 MILLINGTON, Tenn. (April 30, 2015) Chief of Naval Operations (CNO) Adm. Jonathan Greenert addresses Sailors representing the Navy Recruiting Command at a bell ringing ceremony at the Navy Recruiting Command. The ringing of the bell is a monthly event recognizing the accomplishments of the Navy recruiting mission. (U.S. Navy photo by Mass Communication Specialist 1st Class Nathan Laird/Released)