" KNEE SURGERY I’D FIRST HURT MY KNEES IN FALLUJAH WHEN THE WALL FELL on me. Cortisone shots helped for a while, but the pain kept coming back and getting worse. The docs told me I needed to have my legs operated on, but doing that would have meant I would have to take time off and miss the war. So I kept putting it off. I settled into a routine where I’d go to the doc, get a shot, go back to work. The time between shots became shorter and shorter. It got down to every two months, then every month. I made it through Ramadi, but just barely. My knees started locking and it was difficult to get down the stairs. I no longer had a choice, so, soon after I got home in 2007, I went under the knife. The surgeons cut my tendons to relieve pressure so my kneecaps would slide back over. They had to shave down my kneecaps because I had worn grooves in them. They injected synthetic cartilage material and shaved the meniscus. Somewhere along the way they also repaired an ACL. I was like a racing car, being repaired from the ground up. When they were done, they sent me to see Jason, a physical therapist who specializes in working with SEALs. He’d been a trainer for the Pittsburgh Pirates. After 9/11, he decided to devote himself to helping the country. He chose to do that by working with the military. He took a massive pay cut to help put us back together. I DIDN’T KNOW ALL THAT THE FIRST DAY WE MET. ALL I WANTED to hear was how long it was going to take to rehab. He gave me a pensive look. “This surgery—civilians need a year to get back,” he said finally. “Football players, they’re out eight months. SEALs—it’s hard to say. You hate being out of action and will punish yourselves to get back.” He finally predicted six months. I think we did it in five. But I thought I would surely die along the way. JASON PUT ME INTO A MACHINE THAT WOULD STRETCH MY knee. Every day I had to see how much further I could adjust it. I would sweat up a storm as it bent my knee. I finally got it to ninety degrees. “That’s outstanding,” he told me. “Now get more.” “More?” “More!” He also had a machine that sent a shock to my muscle through electrodes. Depending on the muscle, I would have to stretch and point my toes up and down. It doesn’t sound like much, but it is clearly a form of torture that should be outlawed by the Geneva Convention, even for use on SEALs. Naturally, Jason kept upping the voltage. But the worst of all was the simplest: the exercise. I had to do more, more, more. I remember calling Taya many times and telling her I was sure I was going to puke if not die before the day was out. She seemed sympathetic but, come to think of it in retrospect, she and Jason may have been in on it together. There was a stretch where Jason had me doing crazy amounts of ab exercises and other things to my core muscles. “Do you understand it’s my knees that were operated on?” I asked him one day when I thought I’d reached my limit. He just laughed. He had a scientific explanation about how everything in the body depends on strong core muscles, but I think he just liked kicking my ass around the gym. I swear I heard a bullwhip crack over my head any time I started to slack. I always thought the best shape I was ever in was straight out of BUD/S. But I was in far better shape after spending five months with him. Not only were my knees okay, the rest of me was in top condition. When I came back to my platoon, they all asked if I had been taking steroids. "
― Chris Kyle , American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History