sentences:  This was in response to the need for film companies to have a local government liaison who could coordinate local services such as police, state troopers and highway patrols, road and highway departments, fire departments, park rangers and all of the other essential municipal and government services for shooting a production on location.As more production companies began to look beyond the limits of a regular production center for realistic and varied locations, more cities and states began to see the need for production coordination liaison.