BOSTON — Tammy Duckworth still remembers the anger she felt when well-wishers offered encouragement after she lost both legs when her helicopter was shot down over Iraq in 2004. "I thought, how the heck is my life ever going to get back to normal?" she recalled. Duckworth spent a year recovering and many more adapting to her new life. "Recovery is not a smooth process," she said. "You are trying to process what happened. Your family is going through shock.... You have to find a new normal."