For trips TO the airport, Enterprise vehicles must be picked up at Security at 1432 East Street. Pick up the keys and sign the appropriate paperwork at the Security office. Drop the Enterprise vehicle off at the Enterprise Rent A Car return lot at the airport. Follow the arrows to this lot once you enter the main gate. Cars for personal use can be picked up and brought back to the Security office at 1432 East St. However, if you are calling for a reservation instead of making it online, you will need to tell them you are affiliated with Grinnell College. For trips to campus FROM the airport, pick up the Enterprise vehicle from the Enterprise office in the Des Moines or Cedar Rapids airport terminal. Follow their instructions at the desk to pick the vehicle up. Take the vehicle and keys to Security on campus. You can pick up a car at the Des Moines or Cedar Rapids airport after the Enterprise desk is closed. Ask Enterprise how this can work if necessary.