This is the story of a Christmas miracle, a snowfall that couldn't be, and a cat named Tuffy, who truly was. In the waning hours of Dec. 23, 1941, Richard Wood, then age 9, was fast asleep. Not far above him, a four-engine bomber with 19 men aboard was silently gliding through the icy air, heading for an emergency landing at what was then called Davis-Monthan Field. "I assume I didn't hear it because no motors were going," says Wood, who also soundly slept through the ensuing crash - right through the roof of a house less than two blocks...