Yeah, that's how ADSB be. lol. This other one that was behaving extremely erratically was doing so directly above Vegas though. And also within close proximity to base at Coronado. It still had decent altitude at that time too, so building or terrain signal occlusion shouldn't have been an issue.

Military birds absolutely turn off their xpdrs when they don't want us to know what they are doing, but they need a pretty damn good reason to do so when flying through heavily occupied civilian airspace. Military gets to do whatever they want, but they still have to justify it to the FAA to a reasonable extent unless its a situation where the explanation is so secret that the FAA can get bent. These RUDY birds, ostensibly being cargo carriers, shouldn't be expected to be flying those sorts of sorties. At least I wouldn't think so...