| Acronym | Meaning |
![](file.png) | VDD | Verification Description Document |
![](file.png) | TO | Operations Management (TS) |
![](file.png) | PAD | Propellant Acquisition Device |
![](file.png) | LLS | Launch And Landing Site |
![](file.png) | SCF | Sequenced Compatibility Firing |
![](file.png) | COM | Computer Output Microfiche |
![](file.png) | IUS | Interim/intermediate UPper State |
![](file.png) | CIU | Controller Interface Unit |
![](file.png) | HW | Ha Rd Wa Re |
![](file.png) | LF | Launch Forward |