This is part of the process of how to stop mass murderers before they carry out their mentally deranged plans. Here is an example of someone who knew the perpetrator, saw some social media posts and notified authorities (See something, Say something). Even though the posts may have sounded a bit cryptic, the person who reported it to law enforcement knew enough about the suspect to take the threats seriously. Thank God that law enforcement did as well, demonstrating apparently excellent inter-jurisdictional communication of the threat between Anne Arundel, Prince William and Fairfax Counties in Virginia. That's THREE separate counties. I'm seriously impressed.
Also: "... investigators were also able to give a description of his vehicle to officers in Prince William County. An off-duty officer working an assignment at the church spotted the vehicle in the parking lot." Nice work.
Church security was also on the ball and had him under close surveillance from the time he entered the building. They did not let their guard down and did not rely on "hope" as a plan.
"He was dressed in black and wearing sunglasses." A reminder for all of us: Look for signs. Admit to yourself what does not look normal in your surroundings. Yep. Even in church.
