I am old enough to know what duck and cover means. I also get a tight chest whenever I hear a fire-station alarm or anything that sounds like an air-raid warning. That's a real legacy of the Baby Boomers – terrify your children to make them feel safe.
For those of us in Boston after September 11, 2001, another sound recalled those anxieties. Night after night, the only sounds from above were the guttural and threatening growls of fighter jets. While our part of town is far from Logan, the white noise of the occasional, high evening jet headed to fun and sun in Europe or elsewhere is part of the city. When it is replaced with the sounds of warships patrolling the skies, the September attacks are always flying with them.
Our town was where the uber-bad guys left to destroy the Twin Towers. They weren't interested in terrorizing Boston, just using it as their launching pad.
Right after that day of horror, I wrote We build `em, but they don't come (28K PDF). Editors seemed to think it wasn't funny and would never be funny. See if you agree.