Why wasn’t the highjacked plane shot down as protocol dictate

Key points
Witnesses saw nothing but tiny pieces of debris at crash site
scene was unlike a plane crash
investigators found no jet fuel on the ground
witnesses saw no human remains
large amount of paper debris (which included belonging of alleged high jacker) survived the crash
Black boxes found at a different location than crash site
debris found miles away from crash
Why wasn’t the highjacked plane shot down as protocol dictates
high quantities of plane wreckage and human remains were later found
conflicting evidence
phone calls made from the plane. was this possible?
Three minute discrepancy in tapes recorded from cockpit
a privately owned cottage near crash site was turn into shambles

Recommended Source: 911 Scholars for Truth
The Cellphone and Air phone calls from flight UA93
9/11 Commission Report Chapter 1
The Legend of United Flight 93
What happen to flight 93? Richard Wallace

Anything else you find that questions the original reports of passengers bringing down the plane. Was this a cover up by US government. At least 2 references a book or article