"they all flew up into the nite sky and most settled right back down."<quoted text>Propane cannons fire at nite and other times as well. Ive been at the port on the Ohio river at Mt vernon Indiana in winter at nite when a propane cannon went off there where thousands upon thousands of black birds. they all flew up into the nite sky and most settled right back down. and there wheren any to be seen that where injured or dead from flying into stuff
There's your answer. They flew into the sky. That's a whole lot different than flying into houses and buildings. While I can't prove what happened that dreadful night, I can speculate what likely happened.