Visible crew/equipment: At the hospital, after Maria tells Danny about the busboy who was arrested for the same venue and same MO, it then cuts to Jaime undercover in the store. While Jaime walks toward Marco, the dealer at the counter, the camera moves at the same pace as Jaime, and we can see the reflection of the camera on the glass (between Jaime and the camera). (00:28:20)
Continuity mistake: When Danny and Baez confront Carmine to clear a few things up, Carmine tells them to call his lawyer. Just as Carmine clicks his key fob and his car explodes, Carmine's coat is entirely unbuttoned, but when he's blown backwards and slams onto the ground, in the first overhead shot of Carmine lying on the ground, his coat is buttoned up. (00:24:20)
Answer: It's a common cop show plot device. If the police on the show always acted in the most logical way (i.e. not alerting a suspect to their presence) the show wouldn't have the opportunity for an exciting foot chase.