Master Gunnery Sergeant William D. Jankowski enlisted in the U.S. Marine Corps in April 1993. Following the completion of recruit training at Marine Corps Recruit Depot Parris Island, he was promoted to private first class and reported to SOI Camp Geiger for Marine Combat Training (MCT). Upon completion of MCT, he reported to Motor Transport Automotive Maintenance School, and was designated as a motor transport technician.
 
In April 1994, Jankowski reported to Marine Corps Base Camp Pendleton, 3rd Low Air Altitude Defense (LAAD) H & HS Battalion. From April 1994 until February 1996, he served as a motor transport maintenance technician and a quality vehicle inspector. During that period, he was promoted to the rank of lance corporal.

In March 1996, Jankowski reported to Marine Ground Security Forces Guantanamo Bay, Cuba. From March 1996 until May 1997, he served as an automotive vehicle technician, quality assurance manager, and vehicle inspection supervisor. Upon reenlistment, Jankowski later moved and executed orders to Marine Corps Air Station (MCAS) New River Fleet Replacement Enlisted Sustainment Training (FREST) to attain the MOS 6112 Ch-46E helicopter mechanic.
 
In August 1997 after completion of CH46E Helicopter Maintenance Course, Jankowski transferred to Marine Medium Lift Squadron (HMM) 163, Marine Aircraft Group 16 from August 1997 until May 2000. While deployed with the 5th Marine Expeditionary Unit as a member of HMM-163 (REIN), he served as a collateral duty inspector, plane captain, and earned his designation as a CH46E crew chief. During this period, Jankowski was promoted through the rank of sergeant.
 
In May 2000, Jankowski was selected to attend MV-22 Osprey transition maintenance course in MCAS New River, North Carolina. At the completion of the MV-22 maintenance course, he was transferred to Marine Medium Tiltrotor Training Squadron (VMMT) 204 where he served as a MV-22 plane captain, collateral duty quality assurance representative, flight line division senior non-commissioned officer in charge (SNCOIC), quality assurance representative, and quality assurance SNCOIC from May 2000 until June 2003. In April 2001, Jankowski was promoted to the rank of staff sergeant.
 
In June 2003, Jankowski transferred to Marine Operational Test and Evaluation Squadron (VMX) 22, Marine Aircraft Group 26, where he served as a collateral duty quality assurance representative, safe for flight authorization, flight line division SNCOIC, and phase crew SNCOIC. In December 2004, Jankowski was promoted to the rank of gunnery sergeant and worked as a maintenance controller/SNCOIC. In June 2006, Jankowski moved to quality assurance and served as the quality assurance chief.
 
In March 2007, Jankowski transferred to Marine Medium Tiltrotor Squadron (VMM) 266, Marine Aircraft Group 26 from March 2007 until March 2010 where he served as the quality assurance chief along with being a MV-22 plane captain, MV-22 plane captain / auxiliary power unit evaluator and a flight line division chief. He deployed to Iraq in support of OIFC 8.2 as the quality assurance SNCOIC. In March 2010, Jankowski was promoted to the rank of master sergeant.
 
In March 2010, Jankowski transferred to Marine Aviation Logistics Squadron (MALS) 26, Marine Aircraft Group 26, from March 2010 until November 2011 where he served as the power plants/dynamic component SNCOIC and the airframes SNCOIC. In February 2011, Jankowski deployed to Afghanistan with MALS 40 in support of Operation Enduring Freedom 10.2 through 11.1 where he served as the quality assurance chief.
 
In November 2011, Jankowski checked into MALS 24, Marine Aircraft Group 24 MCAS Kaneohe Bay, Hawaii, where he served as the quality assurance chief and airframes division chief.
 
In June 2012, Jankowski executed orders to Marine Heavy Helicopter Squadron (HMH) 463, Marine Aircraft Group 24, to assume the position of the aircraft maintenance chief from June 2012 until July 2014. While deployed with HMH-463 during RIMPAC 2012 as the aircraft maintenance chief, he received a letter of appreciation from the commander of the Pacific Fleet Rear Admiral for his superior performance during the RIMPAC 2012 exercise.
 
In July 2014, Jankowski reported to Naval Air Station Pensacola, Florida, with Marine Aviation Training Support Group (MATSG) 23, where he served as the Marine enlisted aviation maintenance management production chief and the senior enlisted advisor. In February 2017, Jankowski was promoted to his current rank of master gunnery sergeant.
 
In June 2018, Jankowski executed orders to VMM-164, Marine Aircraft Group 39, to assume the position of the aircraft maintenance chief from June 2018 until July 2021. he would deploy twice with the squadron to Kuwait in support of Special Purpose Marine Air Ground Task Force 18.2 and with the 15th Marine Expeditionary Unit. As the aircraft maintenance chief, he was awarded the Meritorious Service Medal for his outstanding performance.
 
He currently serves as senior enlisted advisor at the Center for Naval Aviation Technical Training Detachment Camp Pendleton, California.
 
His Professional Military Education includes Non-Commissioned Officer’s Advance Course, Senior Enlisted Professional Military Education Course, Senior Enlisted Aviation Maintenance Course, MV-22 power plants and Organizational Maintenance Course, CH-46 Power Plants, Power- Train & Rotors Maintenance Course, Rolls-Royce Advanced AE 1107C engine course, Aircraft Mishap Investigators Course, Certified Safety Instructor Course, Lean Six Sigma Green Belt Trained Course, Aeronautical Aviation Mechanic/Airframe and Power Plant Course, Airframes and Power Plants Certification, Joint Aviation Supply / Maintenance Management Course and Naval Aviation Maintenance Program Management Course. He is currently pursuing a degree in Aviation Aeronautics with Embry-Riddle Aeronautical University.

His personal awards include the Meritorious Service Medal (two awards); Navy and Marine Corps Commendation Medal (three awards); Navy and Marine Corps Achievement Medal (three awards); Good Conduct Medal (eight awards); Certificate of Commendation (two awards). 
 

Last Updated: 7 April 2022