Yesterday I posted the closest UFO sightings to the Ridge I have found were on Pulaski Road.
Today I found that there have actually been several sightings in Blue Island in recent years, which means there have been sightings in a Ridge community.
According to the National UFO Reporting Center State Report Index For IL, which can be accessed on-line, the following sightings were reported:
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5/30/2016 - 21:50 - Blue Island, IL - Circle, 1:30 minutes: Two objects were seen trailing each other approximately 400 ft. apart with a orange glow. No sound; commercial aircraft were in area
12/1/2015 - 19:30 - Blue Island, IL - Cross, 10 minutes: 8 soundless low-flying cross-shaped "aircraft," flying from southwest to northeast over Blue Island.
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I only went back five years. There are a lot of reports for "Chicago" without specifying which neighborhood, and a lot of reports for the southwest suburbs, including multiple sightings in Oak Lawn.