Tuesday night I went through a crash course in what really matters, in humanity, in mortality. I was watching the news reports about the Amtrak derailment, and amid my secondhand anguish for injured strangers I thanked God, literally thanked him out loud, for the fact that my immigration hearing in Baltimore had been canceled. Had it not been, I might have been sitting in one of those mangled cars.But relief quickly and seamlessly turned into fear, as I realized a person I hold deep and dearly in my heart travels regularly on that route, commuting between her homes in Philly and New York.