The US Army Chinook above was particularly sad as it was carrying civvie parachute teams (including one from Swansea). It was also an early example how Health and Safety Inspectors can stop a process so as to protect factory workers - they reduced the pressure on air hoses which were used to clean transmission parts before reassembly; The lower pressure failed to remove some small particles which went on to block the lubrication nozzles and 46 people died.