Governmental & Military Abbreviations and Acronyms
- FCSOFairfield County Sheriff'S Office
- FCSOFaulkner County Sheriff'S Office
- FCSOFayette County Sheriff'S Office
- FCSOForest County Sheriff'S Office
- FCSOFergus County Sheriff'S Office
- FCSOFlagler County Sheriffs Office
- FCSOFlathead County Sheriff'S Office
- FCSOFleming County Sheriff'S Office
- FCSOFloyd County Sheriff'S Office
- FCSOFlorence County Sheriff'S Office
- FCSOForrest County Sheriff'S Office
- FCSOForsyth County Sheriff'S Office
- FCSOFranklin County Sheriff'S Office
- FCSOFulton County Sheriff'S Office
- FCSOFrederick County Sheriff's Office
- FCSOFremont County Sheriff's Office
- FCSRFIRE CONTROL TECHNICIAN SEAMAN RECRUIT
- FCSSFuel Cell Servicing System
- FCSTFederal Council for Science and Technology
- FCSTFFuel Cell System Test Facility
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