My friend is flying into and out of ORD in the same day, but has a 10 hour layover. Since his arriving and departing flights aren't on the same reservation (but is the same airline -UsAir) he will have to collect his 2 large suitcases and recheck them. Two questions: will US allow him to check in bags 10 hours before the flight, and if not is there anywhere else to store them while he goes out to explore the city? The best I could come up with was to get a room at the airport Hilton for the day ($90 for 9am-6pm) and just stick them in the room. Thanks in advance for any suggestions!