Dallas Shootings: LAPD Doubles Down on Security

There is predictable fallout from the Dallas massacre in police departments all over the country. We've spoken with a number of cops and brass at LAPD and surrounding agencies ... and here are some top of mind concerns:

-- Cops are concerned about fake 911 calls ... that a copycat might use the emergency number to set up an ambush.

-- We're told cops are talking about carrying extra weapons to ensure they're prepared for the worst. It's a bigger issue now than ever before.

-- The brass is telling officers to always carry ballistic helmets, vests and other protective gear and have it instantly available.

-- There won't be 1-person patrol units for the foreseeable future.

-- Cops are being told not to advertise that they work in law enforcement while off duty.