Chief of Naval Operations (CNO) Adm. Jonathan Greenert gives the oath of office to Rear Adm. Sean Buck before promoting him to the rank of rear admiral upper half.

WASHINGTON (Aug. 01, 2014) Chief of Naval Operations (CNO) Adm. Jonathan Greenert gives the oath of office to Rear Adm. Sean Buck before promoting him to the rank of rear admiral upper half in the James Melville Gilliss Library at the U.S. Naval Observatory. Buck will transfer as director of the Twenty-First Century Sailor Office to be assigned as the Joint Staff (J5) chief of staff. (U.S. Navy photo by Chief Mass Communication Specialist Peter D. Lawlor) File# 140801-N-WL435-835