They are old satellite images... New up to date satellite images are quite expensive but companies sell older images at lower prices... Some of images at google earth are few years old...a quick question: are photos from google earth live photo? personnally, i think it's not, but i just want to be confirmed about that.
Austrailia already claims it can track the B-2's over Texas with its over the horizon rader by tracking the air behind it. I don't know if this can be done in real time fast enough to allow an intercept but you can definately find the ingress/egress routes this way.Thank you Zraver.
BTW, around in California all the weather folk aka weathermen use doppler radar systems that can measure windspeed accurately (whether or not the weather people are lying to me is up to debate, and several jokes I might add...). Aside from that, if a doppler radar can detect gusts of wind, shouldn't it be able to detect a supersonic stealth aircraft. I'm sure it would be quite noticeable if you see a gust of wind moving a mach 2 in atmosphere.