The 73C MOS no longer exists. From 2001 - 2004, the US Army underwent a major reorganisation process which resorted a lot of the occupational specialties. Prior to this reorganisation, 73C was the MOS for Finance Specialist. The "2" indicates a skill level; in this case, a Sergeant, while the "O" indicates that they possess(ed) no other skill/qualification identifiers (such as parachute qualification, instructor certification, etc.).
Pay Disbursement Specialist
The safest MOS in the Army would be one dealing with the Army Band, Human Resources, or finance. These include the MOS - 42F, 42R9B, 42 S, or 44C.
MOS Military Occupational Specialty
Army 82nd airbone is a MOS. This is a job in the Army.
Mail clerk is a supplemental duty - it doesn't carry its own MOS.
91W
MOS, military occupational specialty
Anywhere, 35F Intelligence Analyst is a MOS that can be stationed at any Army Base.
The Army Medical Service Corps Military Occupational Specialty (MOS) begins with 91. A Health Care Specialist is 91W. See related links for list of Army medical MOSs.
Medical Entomologist
voice radio ops
Interior electrician, you play with electricity.
March or April 1993