Pretty much the same place you pick it up. Use Google Maps to get back to the airport. Maps will have an option to direct you specifically to the car rental center. You can follow signs add you approach the airport for car rental return, then keep an eye out for signs directing you to the Hertz section. It's a breeze.
Easy to find right near the parking garage
Follow the signs once you get close to airport that say "Rental Car Return"
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