In the second shot of Commissioner Dan Stanwyk and Charlotte DuBois dancing, he twirls her around and the bracelet on her left hand flies off and onto the floor. In later shots, the bracelet is back in place.
Detective Bonasera refers to TARA as Tactical Assistance Response Unit, but in the next shot, a sign shows Technical Assistance Response Unit.
When Stella removes the rifles from the helicopter, they wobble a lot. No firearm would be accurate on such a flimsy mount - an obvious mock-up.