Most of the housing stock in this area went up between 1958 and 1991, with a lot of it concentrated in the 1960s and 70s across the 22 neighborhoods we cover. That era of construction means a lot of original or first-generation replacement garage door hardware: galvanized cables on drums that were never built with today's insulated, heavier doors in mind. Cable wears from the inside out as individual strands fray against the drum groove, and on a 50-plus-year-old track system that wear has had a long time to happen. Add the climate band here - cold and severe winters - and you get a second failure path. Cable that's slightly frayed will hold fine in July and snap in January, because cold steel loses flex and any rust that formed during a wet fall gets brittle overnight. We see the two causes overlap constantly: an aging cable on a 1960s-era drum, already thinned by rust, that finally lets go on the first hard cold snap. It's not one dramatic event. It's forty-plus winters of small wear finally running out of slack.