Here is a concise summary of the provided transcript:
**Incident:** Covenant School shooting, Nashville, TN, March 27th
**Key Facts:**
* 3 children and 3 adults were killed in the shooting
* Shooter was killed by police within minutes of first responders arriving
* Officers Rex Engelbert, Michael Collazo, and Sergeant Jeff Mathis were among the first to respond
**Response Details:**
* Officers utilized active shooter response training to clear the building room-by-room
* They navigated through smoke-filled hallways, following the sound of gunfire to locate the shooter
* The shooter was neutralized on the second floor; officers then focused on evacuating students and staff, and providing aid to victims
**Aftermath:**
* Metropolitan Nashville Police Department's chief praised officers for their quick, selfless response
* Behavioral health staff were made available to support officers after the traumatic event
* Annual training was credited for the officers' effective response in the emergency situation.
Here are the key facts extracted from the text, each with a number and in short sentence form, excluding opinions:
1. **Date of Incident**: The Covenant School shooting occurred on Monday, March 27th.
2. **Time of Shooter's Arrival**: The shooter arrived at the school at approximately 9:53 a.m.
3. **Entry into School**: The shooter entered the school after firing at the glass of two double doors at about 10:10 a.m.
4. **First 9-1-1 Call**: The first 9-1-1 call was made to dispatch at about 10:13 (exact time not specified in the provided text, but implied between 10:10 and 10:24).
5. **First Responders' Arrival**: First Responders were on the scene by 10:24 a.m.
6. **Officers Involved in Neutralizing the Shooter**: Officers Rex Engelbert, Michael Collazo, and Sergeant Mathis were among the first responders.
7. **Shooter's Neutralization**: The shooter was shot and killed by police officers shortly after their arrival.
8. **Casualties**: Three children and three adults were killed in the shooting.
9. **Training Credited**: Nashville officials credited the officers' quick and effective response to their annual training.
10. **Response Protocol**: The Metropolitan Nashville Police Department implemented their rescue task force protocol after the shooter was neutralized to evacuate the school and render aid to victims.