<div> If there's one thing I've learned from comic books, it's that everybody has a weakness?something that can totally ruin their day without fail.<br> <br> For the wolfman it's a silver bullet.<br> For Superman it's Kryptonite.<br> For me it was a letter.<br> <br> With one letter, my dad was sent back to Afghanistan to fly Apache helicopters for the U.S. army.<br> <br> Now all I have are his letters. Ninety-one of them to be exact. I keep them in his old plastic lunchbox?the one with the cool black car on it that says <i>Knight Rider </i>underneath. Apart from my comic books, Dad's letters are the only things I read more than once. I know which ones to read when I'm down and need a pick-me-up. I know which ones will make me feel like I can conquer the world. I also know exactly where to go when I forget Mom's birthday. No matter what, each letter always says exactly what I <i>need</i> to hear. But what I <i>want</i> to hear the most is that my dad is coming home.</div>