“As vapor rose through the clouds and began to condense, it deposited its moisture on tiny bits of airborne debris, ranging from submicroscopic … nuclei to pollen, spider webs, volcanic ash, steamship exhaust, Saharan dust, even the pulverized ferrous salts

On the day that Dave Schultz was killed, he had the word “kids” written in marker on his forehead and his hand. A colleague asked him about it, and he said it was to remind him that he was to