On September 11, 2001, four planes were hijacked and used as weapons against the American people. American Airlines Flight 11 crashed into the North tower and United Airlines flight 175 hit the South Tower, killing a total of 2,753 people in Southern Manhattan. American Airlines flight 77 crashed into the Pentagon killing 184, and United Airlines flight 93 crashed in a field in Shanksville, Pennsylvania, killing all 40 passengers and crew members. MHS teachers and staff reflect back and share their memory of one of America’s darkest days.