Reading the actual NTSB report [1], my first reaction is just my usual awe at the professionalism of the NTSB. They started with a 3000-ft-long debris field and in the end could say "here are the microscopic stress fractures in the left pylon aft mount bulkhead's wing clevis spherical bearing assembly's ball element's forward bearing race".
[1] https://www.ntsb.gov/investigations/Documents/DCA26MA024%20I...