Full operational capability
In military acquisition, full operational capability (FOC) is the completion of a development effort.
For the United States Department of Defense military acquisition, FOC is defined as  "In general, attained when all units and/or organizations in the force structure scheduled to receive a system have received it and have the ability to employ and maintain it. The specifics for any particular system FOC are defined in that system’s Capability Development Document (CDD) and Capability Production Document (CPD)."
This describes the concept to be a certification event marking completion of training, providing maintenance facilities, and end of planned production of the item. This does not preclude additional orders to obtain the item outside of that contract or after that contract FOC.
- "Glossary of Defense Acquisition Acronyms & Terms, 14th ed.". Defense Acquisition University. July 2012. Retrieved 2013-05-03.