What does O&O stand for?

Over & Out

This definition appears very rarely

Other Resources:

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Operation & Maintenance, Family Housing Ovens & Murray Football League Operations & Maintenance, Marine Corps Operations & Maintenance, Marine Corps, Reserved Operations & Maintenance, Navy Operations & Maintenance, Navy, Reserved Organizational and Management Planning (US OSD organizational charter development authority) Operations and Network Management working group Operational & Organizational Organization and Operation		Overload & Overheat Oversized and Outsized (aircrafts) Owned and Operated Operational and Organizational (Plan) Oil and Oil Equivalent of Gas Operational & Organizational Plan Oral & Practical (aviation exams) Ordering and Provisioning Organization and Procedures orthotic and prosthetic