I've thought about it often. I haven't come close to an answer as to why the avalanche occurred that day, and not the day before.

There was no smoking gun. I really don't know anything that they could have done out of their normal routine that could have prevented this.

It couldn't have been that different than what Arapahoe Basin has been dealing with for 30 years or more. You deal with this stuff long enough, no matter how good of a job you do, something can always go wrong.