| ISS | International
Space Station |
| CDH | Command
and Data Handling |
| SSC Ops
Lan | Station
Support Computers Operations Local Area Network |
| C&T |
Communications
and Tracking
|
| ECLSS | Environmental
Control and Life Support System |
| EPS | Electrical
Power System |
| GNC | Guidance,
Navigation and Control |
| S&M | Structures
and Mechanisms |
| TCS | Thermal
Control System |
| EVA | Extravehicular
Activity |
| CMO | Crew Medical
Officer |
| Med Ops | Medical
Operations |
| OOM | On-Orbit
Maintenance |
