a political decision not to provide adequate resources “
You could say that if they had not spotted him but they did spot him. They let 20 minutes pass after they saw a man with a rifle on roof with clear line of sight and they let him shoot. That is not a case of inadequate resources it is something much worse.
Has anyone bothered to ask why Trump was allowed to go on while the guy with a rifle was getting set? This cost the fireman his life!
No target, no murderous gunfire.