Warnings like this could have a useful purpose... like when traction devices are required during heavy snow on the passes. Example Below:
D - H - S *** S - P - E - I - A - L *** A - L - E - R - T
ATTENTION THERE HAS BEEN A THREAT MADE AGAINST SHOPPERS AT THE MALL OF AMERICA. ALL SHOPPERS WILL BE REQUIRED TO EITHER HAVE OR BE ACCOMPANIED BY SOMEONE WITH A CONCEILED WEAPON PERMIT AND A LOADED FIREARM IN GOOD WORKING CONDITION.