DENVER -- Denver International Airport will test its emergency response to an unthinkable disaster Wednesday.
As part of the drill, DIA will simulate a plane crash with mass casualties. You might see smoke and a lot of law enforcement and emergency crews on DIA's airfield.
Again, it's only a test.
Wednesday's drill will again be a major test of communication among multiple agencies, how first responders get victims to safety and how the airport notifies families.
More than 400 people will participate, including 150 volunteers to play the roles of passengers, friends and relatives.
DIA is leading the exercise with help from airport security, Denver Police and Fire, Denver Health paramedics, the Transportation Security Administration and other agencies.
Organizers say the goal is to test established plans and procedures, and identify areas where improvements are needed.
The exercise begins at 7:30 a.m. and ends at noon.