8eb4e8a0_se_Security_Cooperation_Agency__Definition
[Term] Initial Operational Capability (IOC) [Link] N/A [Definition] 
The first attainment of the capability to employ effectively a weapon, item of equipment, or system of approved specific characteristics, and which is manned or operated by an adequately trained, equipped, and supported military unit or force. Usually a target year or period of a year established early on which drives the development and production schedule. Normally, the IOC objective is based on the threat.
ESAMM Glossary | Defense Security Cooperation Agency
Definition