Preliminary data from the recent collision between a Black Hawk helicopter and an American Airlines jet near Reagan National Airport in Washington, D.C., which resulted in the deaths of all 67 individuals on board, reveals conflicting altitude readings. The CRJ700 airplane was determined to be at 325 feet, plus or minus 25 feet, during impact based on data retrieved from its flight data recorder, while the Black Hawk helicopter was reported to be flying at 200 feet. This altitude discrepancy of around 100 feet raises questions about the safety protocols followed by the helicopter crew, as the maximum altitude for its training mission was 200 feet. The National Transportation Safety Board is working to reconcile these differences in altitude readings to determine the cause of the tragic accident. Additionally, concerns have been raised about air traffic control tower staffing on the night of the crash, with the U.S. Transportation Secretary highlighting a consolidation of controllers shortly before the incident. The investigation continues to shed light on the circumstances leading to this devastating collision.