Worry not, there is an actual reason…for once:

A team of LAPD officers from the Counter-Terrorism and Special Operations Bureau will provide a demonstration that will include a “response to a weapons of mass destruction device” for the benefit of folks attending a Homeland Security conference.

 

According to KNX radio, the drill begins at 10 a.m. on Figueroa between 5th and 4th Street. It will involve “blank” gunfire, low-flying police helicopters, and LAPD officers repelling from the helicopters, and emergency vehicles with lights and sirens.