Iron Mountain Holds UAL 93 Secrets

When we asked at the Shanksville Flight 93 Memorial about the final disposition of the wreckage from UAL 93 we were told that it had been returned to the airline company. This assertion struck us as completely inconsistent with what would be expected for the handling of evidence in an as yet unsolved mass murder. The account provided in the above video seem more consistent with the nature of the situation, but still raises troubling questions regarding many aspects of the case. What does the debris indicate regarding the possibility of a shoot down? What does it tell us about the identity of the plane from which it came? Can serial numbers from parts be traced to maintenance logs.