"TMU Advisory... Chicago/Ohare Miles In Trail has been expanded to 100 Miles In Trail... Expect Humongous Delays... Continue DSP (Departure Delay Program as mentioned below) and Miles In Trail until 2100Z." That was from this past summer. Some one asked "How do I know if I have 100 in trail?" Do you have more than 1? Yes? Then you don't have it.

DM