With all the World, National, Regional, State, County, and City threats in play, it is your Neighbors who pose the highest threat.  A SHTF type of event is not needed for these Zombies to attack.  Substance abuse, mental illness, bad economics, media programming, societal and family breakdown, poor health, road rage, SJW indoctrination, stupidity, evil intentions, mind control, and other trigger mechanisms can set these hostiles in action.  Watch your 6 and always be aware.