A U.S.-led airstrike on a Doctors Without Borders hospital in Kunduz, Afghanistan in October was the result of "human error," according to findings released today. The military had accidently aimed at the hospital instead of at the intended target, a Taliban command center 450 yards away. Technical errors were also at fault. At least 30 staff members and patients were killed in the attack, which continued even after the humanitarian organization made repeated distress calls to U.S.