Where are the Boundaries? The Grinnell College Escort Service will escort you anywhere on the campus or within the city of Grinnell. WHAT TYPE OF ESCORT IS AVAILABLE? Staff members with the Campus Safety and Security/Parking Services Department will walk or drive you to and from your destinations on campus or within the city of Grinnell. The escorts carry two-way radios providing direct communication with the Dispatch Center. HOW DO I ARRANGE AN ESCORT? Call the Grinnell College Campus Safety and Security/Parking Services Department at extension 4600 (on-campus) or at 269-4600 (off-campus). WHAT ARE THE HOURS OF OPERATION? The Grinnell College Escort Service is provided by the Campus Safety and Security/Parking Services Department and it operates 24 hours a day, 365 days of the year.