Sounds great. You're right, I do have the latest firmware update and Willow Grove AFB was NOT listed on DJI's website as a restricted airport zone (which surprised me). However, when I went up this week the Phantom still had the stock parameters set (I believe it's about 2300ft vertical, and I've since changed it) Once I hit 400', signal was "lost" until it came below that ceiling...as a noobie, it freaked me out a bit, but when I realized how close I was to WGAVB, just made the assumption...