The Las Vegas Police Department has issued an after-action report containing 93 recommendations to improve response to any future mass-casualty event.

The document is the result of a lengthy investigation into the events that unfolded at the Route 91 Harvest music festival when a gunman opened fire from a hotel room at the Mandalay Bay Hotel several stories above the 22,000 music fans gathered there.

Some of the recommendations contained in the document are dedicating a dispatcher to large scale events, provide MACTAC response training to hotel and casino industry stakeholders, and expand active-shooter training to include a barricaded active shooter when the shooter is in a position of advantage.

In the introduction to the report, Sheriff Joseph Lombardo wrote, "In the days and months since this horrific crime took place, the Las Vegas Metropolitan Police Department (LVMPD) has worked tirelessly to author the after-action review detailing our response to what has become known as '1 October.' This report is a critical, administrative review that details our overall response: preparedness, communication, tactical response, command and control, medical response and resources, crime scene preservation and evidence collection, media response and coverage, training and equipment, and the care of first responders in the aftermath."

Lombardo added, "We hope we never have to use these procedures that we are putting in place."