Over 80 agencies will take part in an emergency training exercise Thursday, and officials want to make sure the public knows about it.

Training exercise across 4 counties Thursday

Simulates emergency response to terror attack

Involves over 80 agencies

It's being called the largest emergency training exercise ever organized in Florida.

The exercise will simulate a "complex coordinated terrorist attack taking place in Lake, Orange, Osceola and Seminole counties," according to the East Central Florida Regional Planning Council.

The council says the agencies will be practicing tasks that were identified in the aftermath of the Pulse Nightclub attack.

It'll largely be staged in specific areas, along with nearby hospitals:

Barnett Park on West Colonial Drive in Orlando

Seminole State College on Weldon Boulevard in Sanford

Seminole County Fire Department Training on Valentine Way in Longwood

Institute of Public Safety on Lane Park Cutoff, Tavares

Kissimmee Civic Center on Dakin Avenue

320 Beaumont in Kissimmee

The exercise will involve:

26 hospitals

16 law enforcement agencies

16 fire departments

Four health departments

Two ambulance services

Fire emergency management offices

The Medical Examiner's Office for Orange and Osceola counties

University of Central Florida

Orange County Public Schools

Lynx

Central Florida Healthcare Coalition

Other agencies will be involved as well, along with 1,200 live volunteer victims, who will be moulaged, meaning they'll be wearing make-up and have movie props to simulate injuries.

The East Central Florida Regional Planning Council is notifying the public so that there is no undue concern or panic.