Something went wrong between the school alerting the parents, and perhaps meeting with them, and the guy legally obtaining a firearm a couple months later.
In all probability he'd have found another way be it making a bomb or using a car as a weapon.
In San Diego, it's virtually impossible to obtain a CCW and a lawsuit challenging the difficulty is under appeal.
The system is chock full of holes, some really big.
I had to wade through a lot of extra effort when I applied for my CCW permit because I had been arrested on a bad check ($5.00) 48 years ago. The warrant was issued in one county and served in another county some 200 miles away.
Had the CCW gods not been on my side and had both counties not had records nearly 50 years old I would have been denied the permit. The check charge and arrest were both in Alabama and they had copies of the original documents. They provided them for $5.00.
This guy should never have been able to access to a weapon, but denying thousands of others the right to possess and carry a weapon is not the answer. Or if it is then we're asking the wrong damnned questions!
He had a record, but I haven’t seen that he had a conviction anywhere.
No permit is required for carrying a gun in Arizona. If you want a permit, then Arizona shall issue you one, unless you fail to meet certain qualifications. They include:
“3. Is not under indictment for and has not been convicted in any jurisdiction of a felony unless that conviction has been expunged, set aside or vacated or the applicant’s rights have been restored and the applicant is currently not a prohibited possessor under state or federal law.
4. Does not suffer from mental illness and has not been adjudicated mentally incompetent or committed to a mental institution.”
http://www.azleg.state.az.us/FormatDocument.asp?inDoc=/ars/13/03112.htm&Title=13&DocType=ARS