some employees did speak with us unfshlly. they told us as this went down there was nothing they could do according to company policy. how often have you seen surveillance video like this, a smash, a grab. it's a shocker because this happened in a novato store that almost everyone knows. >> i don't know. i just don't think of something like that happening at costco. >> reporter: costco has. employees say they were warned of similar innocents in other stores that when this one came down, all they could do was watch and call >> i would describe it as being pretty bold. >> reporter: in looking over the video, police lieutenant did not see the work of amateurs. quite the opposite. suspects wearing masks and hoodies entered through the exit. they went directly to the jewelry section. took a few seconds to decide what they wanted. they broke the dplasz wiglass wr and escaped in a car with paper license laeplates. >> these people had a plan. >> reporter: a plan they may have executed before. this could be the same group on april 20th