but if these are surface to air then its for hitting planes or things in the sky right?  I guess your reply would be if China sent tanks they probably sent planes too. Wouldn't that just blow up the democrats on the news who keep saying the caravan isn't an invasion and the military being deployed is just a stunt and then with the caravan comes an army.  We have satellites that would spot any large deployments right?  So DOD knows more than we do and has for days.  Wow, War with China would suck.    I thought the call ups for soldiers had to do with Hati.  I'll continue to hope that s all it was/is!