| Acronym | Meaning |
| OVS | Operational Voice System |
| EED | Electroexplosive Device |
| ICC | Interstate Commerce Commission |
| MRD | Material Review Disposition |
| GORS | GrGORSGround Observer RF System |
| DCS | Detail Checkout Specification(s) |
| DWV | Dielectric Withstanding Voltage |
| SAM | Shuttle Attachment ManiPulator |
| DBC | Data Bus Coupler |
| ISI | Initial Systems Installation |