We had a crazy old man go crazy in our little burg 20 years ago, and when he was through shooting up two strip shopping centers and grocery stores-(where I shop), 6 people were dead-(including 2 police officers responding)- and countless wounded.
Oh...and he's still enjoying the largesse of the county system at the taxpayers benefit.
Personally, he's crazy like a fox.
This perp sound like that too.
He has been lingering on death roll for 20 years, and basil, after reading through the story again, I realized a customer of the grocery store actually went to his car to get his gun & kept the perp busy for a few minutes while folks escaped from the back of the store... but soon was confronted by a policeman who thought he was part of it.