Ghostwalker did trash some of the security forces in Denver, some in each of the zones, but, with the exception of Aztlan, did it all in self defense (of course, random dragon flying around would spook anyone, factor in paranoid zone troopers and...). Aztlan he took special care of, and gave the entire Aztlan zone to the CAS and likely made several other concessions to the other local powers.
Plus, he's a great dragon. It's better to be working with one than on the business end of their flame thrower.