Why did many of the 9/11 witnesses die?

well you have to remember that many of these people had witnessed this or had a family member die on this horrible day, which might have caused suiceide. the government did not kill these people. you must remember that people die, because we are not ifallible. we have car crashes, OD, fall, have medical emergencies, have accidents and are killed. Its sad, but its the circle of life. Not everything is a conspiracy