Embedded Files
ORD sirens are typically tested on the first Tuesday of the month within about a half hour of 10AM, the first Wednesday of every month within about half an hour of 10AM, and possibly some other days not yet identified.
FS MOD 8032B - Bessie Coleman Dr & W Zemke Blvd. 4/8/21, copyright Christopher Aylward.
FS MOD 8032B - Montrose Ave & Spine Rd. 4/8/21, copyright Christopher Aylward.
FS MOD 8032B - O'Hare Cargo Area Rd. 4/8/21, copyright Christopher Aylward.
FS MOD 8032B - At the cell phone lot near the main terminal on Recirculation Rd. Taken 6/2/21, copyright Christopher Aylward
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