CMDCM RACHEL COSTELLO
Command Master Chief
Master Chief Costello was born in Kobe, Japan, and raised in Long Beach, CA. She enlisted in the Navy in 1984 and was assigned to U.S. Naval Facility Argentina, Newfoundland as an undesignated seaman. Her next assignment was to Naval Air Station, Miramar, where she was designated as a Navy Yeoman.
Master Chief Costello entered the Flag Officer Writer Community in 1989. Her first Flag writer assignment was with Commander, Fleet Air, Western Pacific in Atsugi, Japan. As a native Japanese speaker, Master chief Costello was heavily involved with the socialization of the Night Landing Practice Program with the Japanese civilian community and worked closely with the Japanese Maritime Self-Defense Force and U.S. SEVENTH Fleet as Vice Admiral Stan Arthur's personal interpreter.
She next transitioned to the Surface Warfare Community as Flag Writer for Commander, Amphibious Forces, U.S. SEVENTH Fleet/Commander, Amphibious Group ONE in White Beach, Okinawa. In 1995, she was selected to fill a gapped Flag Writer billet at Commander, Naval Surface Force, U.S. Pacific Fleet. Upon VADM Krekich's retirement, Master Chief Costello was assigned to U. S. Naval War Collegeto standup a new Office of the Provost.
She was again selected to another critically gapped billet as Flag Writer to the Master Chief Petty Officer of the Navy (MCPON). During her assignment she was hand-selected to join the personal staff of CNO, Admiral Vern Clark. Later, while working for Admiral Mike Mullen, she was selected to relieve the Yeoman "C" School (Flag Writer School) Course Supervisor in Meridian, MS. There she oversaw the first Flag Writer Course curriculum review in five years.
Master Chief Costello was selected for the Command Master Chief Program in 2009 and immediately reported to Forward-Deployed Naval Forces as Command Master Chief of USS MUSTIN (DDG 89) in Yokosuka, Japan. During her CMC tour, USS MUSTIN earned the Battle "E" Award, multiple COMPACFLT Retention Excellence "Golden Anchor" Awards, and Humanitarian Service Medal. Due to her efforts, Master Chief Costello was nominated for Master Chief Anna Der Vartanina Leadership Award for 2011 and 2012.
In May 2012, Master Chief Costello returned to the aviation community as CMC of HS-11 where she helped lead the last deployment for the "Dragonslayers" on board the USS ENTERPRISE (CVN 65). During her current tour, the "Dragonslayers" won the coveted Battle "E" Award and the CVW-1 "Golden Wrench" Award.
Master Chief Costello is qualified to wear both Enlisted Surface Warfare and Enlisted Aviation Warfare Specialist devices. She is a certified U.S. Navy Master Training Specialist, and is a graduate of U.S. Navy Senior Enlisted Academy, CMC/Chief of the Boat Course, and University of North Carolina Advanced Management Program.