Whoa, I had no idea. From Wikipedia:
Around the time of leaving Queensrÿche, DeGarmo began a full-time career as a professional corporate jet pilot. He holds an Airline Transport Pilot Licence, which he acquired during Queensrÿche's most commercially successful years as well as CL-30 (Challenger 300), LR-JET (Learjet), IA-Jet (Westwind) and LR-45 (Learjet 45) type ratings from the FAA.
It goes on to list some musical projects he's done post-Queensrÿche, nothing more recent than 2007.