| Acronym | Meaning |
| OS | OPtics Subsystem |
| SEQ | Sequence |
| VLPS | Vandenberg Launch Processing System |
| STIL | Software Test And Integration Laboratory |
| TPI | Terminal Phase Initiation |
| IDC | InterfaceDocumentControl |
| JB | Junction Box |
| TBN | To Be Negotiated |
| ORD | Operational Readiness Date |
| BDD | Baseline Definition Document |