Office of Climate Observation One Cancels the Other Order Open-Close-Open Orbiting Carbon Observatory Object Code Only Off-Load Control Officer Overall Control Office Office of Communications and Outreach One Cancels the Other Oort Cloud Object Operational Capability Objective Oven Controlled Oscillator Non-Partitioned Index Obstruction of Court Orders Office of Children's Ombudsman Office, Chief of Ordnance Office, Chief Ordnance Officer Commanding Operations Operating and Control Organization Operating Capital Outlay Operation Capability Objectives Operational Contracting Officer Operational Control Organization Operations Control Office Orders to Cease Operation Ostend Air College
Office of Climate Observation