How could preparedness measures been improved before the shooting? After identifying the failures in the active shooter response, as scene commander what measures would you have employed to address the active shooter threat?

Marjory Stoneman Douglas High School Commission Report

How could preparedness measures been improved before the shooting?
After identifying the failures in the active shooter response, as scene commander what measures would you have employed to address the active shooter threat?
How could have recovery efforts been improved to save more lives?
Mitigation strategies are typically implemented following lessons learned from a tragic event or disaster. In each of the three phases noted above include 1–2 paragraphs explaining how mitigation could have better prepared first responders.