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Information Systems Security
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Interactive Survivability Simulation
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Integrated Systems Support
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Inspection Selection System
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In-System Select
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Similar to ISS
1LT - First Lieutenant
1MC - General Announcing System
1MX - 1st Battalion The Middlesex Regiment
1NCD - 1st Naval Construction Division
1SG - First Sergeant
1st - IOC 1st Information Operations Command
Land
1WVI - 1st West Virginia Infantry Regiment
View all in Military