I was at work, at Analog Devices, that morning. Someone came running thru the lab, crying out that New York had been bombed. So I took the lab TV set; we had one because we were doing video compression work and we needed the TV to se if video looked good after being compressed and then decompressed. I set the TV up out in the hall, on rabbit ears and it pulled in the major networks who were covering nothing besides 9-11. Everybody on our floor of Analog Devices gathered around the TV, no one spoke. We saw the World Trade center get hit and later collapse. New York’s first responders ran into the stricken building to save people. Many of them died when the building fell.
Over the next couple of days everyone put an American flag, on a flag pole, on their cars or pickup trucks.