The subject line was “The Guadalupe.” The time stamp was Saturday, July 5, at 7:57 a.m. The sender was senior editor Aaron Parsley. “I don’t have a phone or a laptop but I’m home in Austin now and wanted to let y’all know what happened,” Aaron wrote. I was on a basketball court at a small park, about to play three-on-three. Reading those ominous words, I waved my friends off. I’d sub in next game.I sat down on a bench, and I began to read.The text of the email, which was also sent to director of editorial operations Anna Walsh and executive editor Kathy Blackwell, was unfathomable. I couldn’t understand at first what Aaron was telling us, what he had lived through. In about a thousand evocative…