| Acronym | Meaning |
 | OBSS | Off Board Sensor Systems - Ordo Byantinus Sancti Sepulchri (Byzantine Order Of The Holy Sepulchre) - Orbiter Boom Sensor System (space Shuttle) - Origins Billion Star Survey |
| COO | Chief Operating Officer |
| JITC | Joint Interoperability Test Command |
| PSI | Portable Source Initiative |
| NDAA | U.S. National Defense Authorization Act |
| SDO | Scattered Disc Object |
| NDP | New Democratic Party (Canada) |
| ALARM | Air-Launched Anti-Radar Missile |
| OTB | Off The Ball -OneSAF Testbed (a Descendant Of ModSAF) |
| JEE | Java Platform |
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