##  [O'brien, James F](/individual/james-f-%20obrien) 

  ![](/sites/default/files/styles/square_500_x_500_/public/default_images/download%20%289%29%20%282%29_0.jpg?itok=5WstKkf1)James F O'brien

 









 

 



 

 

**[Cook County Forest Preserve Police](/illinois/cook-county-forest-preserve-police)**





, Illinois 











 

 



 

   
Additional Affiliations:



 

**[Oak Lawn Police Department](/illinois/oak-lawn-police-department)**



**[Palos Hills Police Department](/illinois/palos-hills-police-department)**



 

 



 

 

 [![](/sites/default/files/styles/max_325x325/public/default_images/depositphotos_8627182-stock-illustration-shield-symbol%20%281%29.png?itok=D9kYZhQ4)](/illinois/cook-county-forest-preserve-police)