During the police chase in the opening scene the officer is calling out the pursuit through his police radio. The officer is not pressing the button on the microphone. The other officers/dispatch would not hear anything he is saying over the radio.
The "Firing Range" sign on the door of the firing range is inside the room instead of outside.
When Nell pulls the names of the people at the race track from face recognition, one of the names on her screen does not match the name shown on the big screen, on her screen the name shows up as Yurevna, Donany but on the big screen it shows up as Yurevna, Donant.
When Sam tackles Paulson they roll painfully down about 5 concrete steps. In the next shot, Kensi and G walk down the same stairs which visibly give way showing it's padding painted like concrete.