They are usually intent on suicide.
Discussion
then they get it quickly and nobody else gets hurt, if there is people with weapons ready to deal with it
also, you should do some research on a number of the cases, many times:
psychiatric conditions
fbi already had them on their radar
taking psychotropic drugs
bought their weapons with help or out of state
sometimes were even given their weapons
usually it has turned out the FBI was grooming them for their job
the whole thing was suspicious, horrible and tragic and how quickly politicians jumped on it to take weapons away even harder from people who would have shot this psychotic loon if they were not legally prohibited
always, always, always
just do your research, i've seen dozens of these cases, from Port Arthur to Columbine to dozens of others
i mean, all you get if you ban weapons is like the UK, where they just run around with knives and stab people randomly, great, so, what are the people going to do, throw themselves on top of this guy and get stabbed?
Vehicles, my friend, not knives. Vehicles are non-suspicious and can easily be repurposed to cause mass casualties.
Otherwise. 100%.