My daughter is flying into ATL from ORD arriving around 10:15 into gate E26. She then is catching a flight from gate F4 departing at 11 am (international). What's the best way to get to the other gate? The maps aren't really clear. Will she have to go through security again to get to Terminal F? We know it's a tight connection but she'll be checking her luggage in ORD. TIA!