- "Don't let something as predictable as the weather get in the way of dispensing justice."
- ―Rothana Engineering motto for the Purity
The IM-X-981 hostile-environment garrison, also known as The Purity was a relatively new line of Imperial garrisons specializing in extreme weather conditions created by Rothana Heavy Engineering.
- Star Wars: Imperial Handbook: A Commander's Guide (First identified as IM-X-981 Hostile-Environment Garrison, simultaneous with The Purity)
- "Imperial Garrisons"—Star Wars Adventure Journal 12