Every year since 2001, I wake up thinking about the Twin Towers. Even now, 13 years later, I clearly remember where I was on that day, what I was doing, and what I was wearing. I remember the warm breeze of early fall in Michigan and the blue skies that spread across the region. I remember Krystyna, the histologist, coming into the lab all in a dither. I had been struggling to tie a mouse muscle onto the force transducer, but I knew, just by looking at her, that my problem was the least of our worries at that point. Krystyna's voice trembled as she told Cheryl and me what had happened. We all looked at one another, our eyes wide with amazement, and decided to close up the shop for the day. We scurried back to our computers to try and find more information on what was happening. I even left my own lab to check in on a friend at the dental school. His cousin worked in one of the towers and hadn't been heard from. A short while later, we found out the cousin was safe, but only b