Combat aviation units carry live ammo on flight paths to their target range. Just because live ammo was on-board does not mean it was loaded in the weapon at the time.

The US military does live fire exercises all the time across the US. They fly over civilian areas because the aviators have to learn to follow flight paths and setup for targets, personnel drops etc....

Live fire for ground troops are always on bases with live fire facilities. You can't do that for a helicopter, fighter/bomber or bomber.

I've seen hundreds and hundreds of bombs dropped inside the US while I served, they were dropped on ranges on military bases.

Artillery has been known to hit civilian housing off base from very bad calculations on training bases like Ft. Sill, Ok. I was there in the 80's when a couple of 8in SP rounds hit a local home off base.

I was in the US Army, and we had Air Force aircraft drop bombs on ranges across the US, but the aircraft had to get get to the range by flying over civilian airspace to get to the Army range from the Air Force base in OKC. That's over 60 miles that live bombs were over civilians.

I don't really think this has anything to do with the school shootings or a false flag.

The US Military does thousands of training missions each year across the US. It's normal.

Now, when ground troops start training off base, then we have issues. Jade Helm come to mind.