American Airlines collision with Army helicopter is worst U.S. air disaster in years
1. A midair collision occurred between a military helicopter and an American Airlines regional jet. 2. This incident is the worst air disaster in the U.S. in over 15 years. 3. The crash involved American Eagle Flight 5342, carrying 64 people. 4. Federal investigations will follow to determine causes and safety implications. 5. Airplane crashes are rare due to stringent safety measures and regulations.