That's only one of the several possibilities where weapons can be Constitutionally used to defend a State and it's security but the short answer is yes.
Yeah, I hate to break it to you but if your state goes to war against the US military, there is no number of guns that is going to help your cause... We've moved way beyond the days of muskets and swords.
If you want to look at real world problems you have to look at the violence on our streets and how we protect ourselves and how our officers enforce the law. Sport and hunting are secondary bonuses that come with gun ownership.
Simple enough. Stop blaming gun owners for the crimes of thugs. Increase penalties with use of firearms during criminal activity significantly with no early parole. Get rid of gun free zones immediately. Support your local police since they are truly are on the front lines of this. Allow national reciprocity on concealed carry (this one is absurd that I even to have write it---a privilege [drivers license] is not even questioned nationally, but an actual Constitutional right [self defense] has to be checked at each state line. Teach gun safety in schools so that kids develop a healthy respect for firearms. Do this & then gun owners will know you are serious about wanting to stop the problem.
Most of these are great ideas which I support and agree with. I dont like the idea of everybody carrying all the time. If that was law the kid in Vegas would have surely put a few into trump last week (another real life example for you)... don't you find it a little hypocritical that you can't carry at trump properties, trump rallies or even the republican national convention? What do you think the reasoning for that is?
The secret service does this......they have jurisdiction over securty wherever Trump is.....when Trump first appeared the NRA meetings years ago they permit concealed carry at their conventions....
Do you understand that as more Americans have actually carried guns, our gun murder rate and gun crime rate went down? Do you understand that that is a fact.....?
In the 1990s about 2 million people carried guns for self defense....in 2007, 4.7 million people...and in that time period the gun murder rate went down, not up. Do you acknowledge that fact? Between 2007 and 2013......12 million people were carrying guns...and the gun murder rate went down....do you acknowledge that fact?
in 2016, 13 million people now carry guns....and up to 2015 our gun murder rate went down........do you acknowledge that fact?
So you are simply wrong in your belief....
Normal people carrying guns does not increase the crime rate, the murder rate or the gun crime and murder rate......that is a fact..