hi all, im rob..i will be coming over to the states from the uk in september on a spotting trip..one of my days here, i will be flying into o'hare ord from baltimore bwi and back again with united..my question is, on my arrival at ord can i stay airside until my flight back, i arrive at about 10am and my flight out is 10pm, is it possible to stay in the terminal all day spotting without any hassle..i hope i can as the united terminal is in a good place to spot from...any info on this would be appreciated...thanks rob.