At age 35, I'm flying a top secret space shuttle (in this scenario I'm an astronaut) and a meteor is coming to hit the US. The only chance to save everyone is for me to drive my top secret space shuttle in to the meteor. So I've got like a week before that needs to happen, and in the meantime, the US sends a "care package" via supersonic speed to my space shuttle full of the best foods, wines, beers, women and other comforts that can be offered. During that week the entire US spends pretty much all of it's waking hours in praise of what a great man I am and how much of a sacrifice I'm making.
Then after a fantastic week in space, I drive my top secret space shuttle at the meteor. I successfully knock the meteor off it's coures and instead of hitting the US it hits China (China had been plotting to nuclear bomb the US the next week). I am severely injured, but I somehow survive and blast back to the US in my escape pod.
I've lost one of my legs, but I get a really top notch mechanical leg, kind of like Darth Vader's in Star Wars.
Then I live out the rest of my life as a living national hero until one day when I'm 90 years old, a second meteor approaches. Then once more, I sacrifice myself. I come out of astronaut retirement and the same space shuttle that I flew 55 years before (it had been repaired and some sweet new features had been added). I launch in to the meteor and completely destroy it. As my shuttle is ripped apart, I notice that there are alien life forms living in the meteor, and it's not really not a meteor at all, but an alien space ship that had neem taking over Earth. I single-handedly destroy all the aliens on the meteor and the last thing the alien overlord, Znuuk, sees is my old, chiseled, stubble-covered face grinning with a cigarette in my mouth. And I say "Not on my watch" and the explode the whole damn thing to kingdom come.
My body is completely vaporized in the explosion. The US adds a national holiday called Bear Day.