##  [Parkhill, Gregory M](/individual/gregory-m-%20parkhill) 

  ![](/sites/default/files/styles/square_500_x_500_/public/default_images/download%20%289%29%20%282%29_0.jpg?itok=5WstKkf1)Gregory M Parkhill

 









 

 



 

 

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





, Illinois 











 

 



 

   
Additional Affiliations:



 

**[Des Plaines Police Department](/illinois/des-plaines-police-department)**



**[South Barrington Police Department](/illinois/south-barrington-police-department)**



**[Will County Sheriff's Office](/illinois/will-county-sheriffs-office)**



 

 



 

 

 [![](/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)