I saw my edit was undone in referring to the post security shuttle being discontinued. My personal experience at O'Hare is the source for this and is confirmed as well by the United map of O'Hare now not including the shuttle. I can also point you to a discussion on the Airliners.net discussion board which also confirms this. Links follow: https://www.united.com/web/en-US/content/travel/airport/maps/ord.aspx (previously the shuttle was indicated by a dashed line between terminal 2 E4 to Terminal one C-gates. http://www.airliners.net/forum/viewtopic.php?f=3&t=1383591 (see post #4 onward - I am poster yeogeo, incidentally). United has not announced this change in service so there are no other ways for me to confirm this change at O'Hare. Yeogeo41 (talk) 15:34, 11 February 2018 (UTC)