What is the purpose of Operation and Maintenance (3400) appropriation?

• A. Day-to-day expenses such as training exercises, deployments and civilian pay
• B. Capital improvements to facilities
• C. Emergency response and disaster relief
• D. Research and development programs

Answer: (A)

Operation and Maintenance funds are the ongoing, recurring costs required to run and sustain the force. This appropriation is intended to cover day-to-day expenses that keep operations ready, such as conducting training exercises, deploying units as needed, and paying civilian employees. These are the routine, operating costs that recur month to month or year to year.

Capital improvements to facilities require different funds, typically construction or military construction appropriations, not the day-to-day operating money. Research and development programs are funded through separate RDT&E accounts, not O&M. Emergency response and disaster relief may be addressed through special authorities or dedicated emergency funds, but the primary purpose of this appropriation is to support ongoing operations and readiness through routine expenses.