Mass shooters go for gun free zones (soft targets). Churches are considered as such. We did have an incident dealing with an individual suffering from PTSD. He showed up 3 times during Sunday Service, each time his actions escalated. He made it all the way through the sanctuary and sat down by the singers on stage. We reevaluated our procedures and secured all entrances except main entrance and set up communication between parking lot, Children's Church, and main sanctuary. On Friday of that week, the individual rammed his vehicle into a gasoline tanker. He lost his life and did several millions in damage.