Wow, some of you really get irate pretty easily.
I've stayed agnostic about whether they're military aircraft or not. Obviously, none of us know, no matter how many years you want to say you've been monitoring stuff for, etc. Ranchosbill, to be perfectly honest, your posts are rather rambling & you seemed not to know that SR-71s haven't been flying for a long time & McClellan hasn't been an AFB for a long time. You're not a credible source of valid information. So that's why I tried to ask you a lot of follow-up questions. The babies crying about my 'King of All Monitoring' moniker don't realize how much pleasure I derive out of their whining about it.
Someone makes a response saying "I agree with __ because I've monitored for __ years & only military aircraft use "missions!" then starts squealing & wanting the thread closed when I point-out a few examples of non-military aircraft having & using the "missions" vernacular too.
If this thread should be closed, it's only due to the inability to stick to a pretty straightforward topic by a few immature people. For the mature people, there are several options here -- don't read the thread, and/or ask an adult to show you how to filter-out certain members so you don't see their posts/responses. For the immature people, yeah, beg the thread to be locked because you can't handle it any more.
Bill, I now believe what you heard was an SR-71 communicating with a TR-3A 'Black Manta' based out of McClellan AFB. Their true mission was to root out nitwits on RR.com, and they succeeded! Hope you're happy, fella!