Chicago, Il, United States, 2013-11-21 — /travelprnews.com/ — The Chicago Department of Aviation (CDA) hosted its 4th Annual Safety, Health & Wellness Expos at O’Hare and Midway International Airports on November 19 and 20. More than 350 employees participated in the events, which were held at O’Hare’s Skilled Trades Building on November 19 and today at Midway’s… Read the full press release