company level except petroleum and water, which has battalion and group level units. There is one Bulk petroleum Company on Active Duty. Military Occupational Specialities The nine Quartermaster Enlisted Military Occupational Specialties (MOSs) are: 92A – Automated Logistical Specialist 92F – Petroleum Supply Specialist 92G – Culinary Specialist 92L – Petroleum Laboratory Specialist 92M – Mortuary Affairs Specialist 92R – Parachute Rigger 92S – Shower/Laundry and Clothing Repair Specialist 92W – Water Treatment Specialist 92Y – Unit Supply Specialist The five Quartermaster Warrant Officer Military Occupational Specialties (MOSs) are: 920A – Property Accounting Technician 920B – Supply Systems Technician 921A – Airdrop Systems Technician 922A – Food Service Technician 923A – Petroleum Systems Technician The three Quartermaster Officer Areas of Concentration (AOCs) have been merged into 92A as Additional Skill Identifiers (ASIs) 92A – Quartermaster, General R9 – Aerial Delivery and Materiel (formerly 92D) R8 – Petroleum and Water (formerly 92F) Leadership / School The officer in charge of the branch for doctrine, training, and professional development purposes is the Quartermaster General. The current Quartermaster General is Brigadier General Michelle Donahue. The Quartermaster General does not have command authority over Quartermaster units, but instead commands the United States Army Quartermaster Center and School, located at Fort Lee, Virginia, near Petersburg. This school provides enlisted advanced individual training (AIT) and leader training for Quartermaster officers, warrant officers and non-commissioned officers. For a list of US Army Quartermasters General, see Quartermaster General (United States). Notable casualties The 14th Quartermaster Detachment, a U.S. Army Reserve unit from Greensburg, Pennsylvania, suffered the greatest number of casualties of any allied unit in the Gulf War from a Scud missile attack on 25 February 1991 Maj. Steve V. Long, a Quartermaster Officer who was serving as Secretary of the General Staff Office of the Commanding General U.S. Total Army Personnel Command, was one of the casualties of the September 11 attacks when American Airlines Flight 77 struck the Pentagon. Several members of the 507th Maintenance Company were captured or killed in an ambush on 23 March 2003 during the Iraq War: Sergeant Donald Walters, killed in action – Silver Star recipient Specialist Edgar Hernandez, captured Specialist Shoshana Johnson, captured Private First Class Howard Johnson II, killed in action Private First Class Jessica Lynch, captured Private First Class Lori Piestewa, killed in action Private Brandon Sloan, killed in action Private Ruben Estrella-Soto, Jr, killed in action Quartermaster