Group Terrain Negotiation 2 (Source)
From SWGANH Wiki
1. Group Terrain - If your people already have explore 4 in scout, have them look at their crawl speed when you are grouped....Yes, I said your prone crawl speed...It's comparable to some of the rifle crawl speed bonuses. Some of my rifleman friends used to have prone races sometimes when we were bored. If they don't have explore 4, then they basically do now...