TULSA, Oklahoma - Dozens of Green Country first responders performed a full-scale disaster drill at Tulsa International Airport Monday.

The exercise not only helps maximize safety for the flying public but also gives emergency personnel the chance to practice how they'd handle a real-life disaster.

Airport leaders say they're required to do this drill every three years and their goal is to make it as realistic as possible. Nearly 20 departments were involved in Monday’s drill and their assignment was to respond after an aircraft crashed into a vehicle on the airport's runway.

Several first responders played the role of crash survivors and each department played their part in getting the situation under control.

Emergency manager Tim Hammer says the first few minutes are the most critical and this drill gives departments an idea of how long it'll take to respond.

"Typically, you won't see all the units you would at the exact same time, so we staggered their response," said Hammer.

The airport's emergency manager says they've spent the past year planning this drill.