During the Galactic Civil War the Empire conducted experiments with Firegems to use them as high-energy power sources. The Pa'lowick system was quarantined and a task force of Star Destroyers and Imperial Customs cruisers patrolled the region to keep out trespassers.
- Star Wars: The Power of the Force (1995)
- Gundark's Fantastic Technology: Personal Gear
- The Truce at Bakura Sourcebook
- Alien Encounters