150626-N-RS239-174 Washington (June 26, 2015) Chief of Naval Operations (CNO) Adm. Jonathan W. Greenert presides a change of command ceremony as Vice Adm. Nanette M. DeRenzi retires and is relieved by Vice Adm. James W. Crawford III who became the 43rd Judge Advocate General of the Navy. Rear Adm. John Hannink was promoted prior to the ceremony to the rank of rear admiral upper half and will serve as the deputy judge advocate general and commander of Naval Legal Service Command. The Judge Advocate General of the Navy provides legal and policy advice to the Secretary of the Navy and the Chief of Naval Operations on all legal matters from military justice to environmental law. The Judge Advocate General also directs a worldwide law firm of more than 2,300 attorneys, paralegals and support staff. (U.S. Navy photo by Jennifer Zeldis/Released)