| Acronym | Meaning |
 | SDD | Software DescriPtion Document |
| VIS | Visual |
| HEM | Hitchhike Experiment Module |
| DA | DeploymentAssembly |
| OSF | Ordnance Storage Facility |
| DSAD | Data Systems And Analysis Directorate (JSC) |
| VO | Vehicle Operations |
| PPP | Payload Patch Panel |
| CV | Expendable Vehicles Operations (KSC Directorate) |
| SSDD | Software System Design Document |
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