Las Vegas police officers who normally patrol alone are being paired as a precaution following yesterday's deadly ambush that left claimed the lives of two veteran officers.
They were gunned down as they were having lunch at a pizzeria, in an older strip mall about five miles from the Las Vegas Strip.
They were shot at point-blank range by a man and a woman. One of them was heard to shout "This is a revolution."
Police say they don't have a motive for the rampage. One of the officers was able to fire back but it's unclear if he was able to hit them.
They fled across the street to a Wal-Mart, where a customer was gunned down just inside the floor. A gunbattle with officers followed and the woman fatally shot the other shooter and then herself.
Police say the case is complex because there are so many witnesses.
The officers were married and had children.
Wal-Mart expressed its condolences in a statement and said that the company is working with police on the investigation. Cici's Pizza said in a statement the company was deeply saddened by the shooting and would keep the location closed until further notice.