Delaney T
I'd also note that formal Boards-of-Investigation do make errors, usually take excessive time to release conclusions, and sometimes deliberately hide results from the public.
The U.S. Navy hid the results of the last Blue Angels/F-18 fatal airshow crash (pilot error) ... until a newspaper forced them in judicial court to release the basic investigation report.
IF you knew how the US Military investigates and under its legal privilege for Safety Investigation Boards for confidentiality, you would know that that statement is incorrect.
SIB reports are confidential, not releasable to the public, they are solely to prevent accidents. A releasable, legally admissible report is written by the Accident Board, who conducts its own investigation. The SIB privilege is a long-standing (50 years or more) policy granted the military by law.
GF