They only painstakingly piece together plane parts when they don't know why the plane crashed. In this case, it was kinda obvious.
As for clearing out the crime scene, this is just bogus. How in the heck do you think any equipment could even get to the scene? Debris was blocking all access. They had to start removing debris immediately. It was all taken to the landfills and sifted through for months before any was "sent to China".
Undo what Wilson did