A plaque honors Lauren Grandcolas, who died on United Flight 93, in Union City, Calif., Aug. 17, 2021. Twenty years later, Jack Grandcolas still remembers waking up at 7:03 that morning. He looked at the clock, then out the window where an image in the sky caught his eye — a fleeting vision that looked like an angel ascending. He didn't know it yet, but that was the moment his life changed. Across the country, it was 10:03 a.m. and United Flight 93 had just crashed into a Pennsylvania field. His wife, Lauren, was not supposed to be on that flight. (AP Photo/Haven Daley)