With all due respect lets all be wary of the 'cult of sacrifice' which often takes hold when someone dies to save someone else. Any time someone dies to save someone else, I suggest the appropriate reaction is that we should simply regret among ourselves that we didn't develop a technological solution to the problem before the problem presented itself, not engage in hero worship (please don't read this as diminishing what this person did, it was a sacrifice, and those kids owe it to him to live good lives now).