September 8, 2019 - CTA Blue Line train 117 crests a hill coming out of downtown Chicago, Illinois as it approaches the Damen Station, headed toward O'Hare airport.

CTA Blue Line train 117 crests a hill…

September 8, 2019 – CTA Blue Line train 117 crests a hill coming out of downtown Chicago, Illinois as it approaches the Damen Station, headed toward O’Hare airport.