An ODA consists of 12 men, each of whom has a specific function (MOS or Military Occupational Specialty) on the team, however all members of an ODA conduct cross-training. The ODA is led by an 18A (Detachment Commander), usually a captain, and a 180A (Assistant Detachment Commander) who is his second in command, usually a Warrant Officer One or Chief Warrant Officer Two. The team also includes the following enlisted men: one 18Z team sergeant (Operations Sergeant), usually a master sergeant, one 18F (Assistant Operations and Intelligence Sergeant), usually a sergeant first class, and two each, 18Bs (Weapons Sergeant), 18Cs (Engineer Sergeant), 18Ds (Medical Sergeant), and 18Es (Communications Sergeant), usually sergeants first class, staff sergeants or sergeants. This organization facilitates 6-man "split team" operations, redundancy, and mentoring between a senior specialist NCO and his junior assistant.