What is the next action a calltaker should take after entering the code for a series of double taps?

Raising the priority to level 3 and pre-releasing the event is the correct action to take after entering the code for a series of double taps. This procedure is crucial because double taps typically indicate an urgent or emergency situation that requires immediate attention. By raising the priority, the calltaker ensures that the event is treated with the urgency it deserves and can facilitate a quicker response from units. Pre-releasing the event allows the information to be disseminated promptly, enabling officers to mobilize as necessary without delay.

This course of action is central to maintaining effective communication and response protocols within the precinct, ensuring that all pertinent information is prioritized accordingly for the safety of the public and responding officers.