Wreckage is all over the place! We debunked this in 2002. Sure, 9/11 was predictable, and some knew and let it happen. But, it did happen, planes crashed and people died, the events occurred.
we have studied two key pieces of wreckage photographed at the Pentagon shortly after September 11 and found them to be entirely consistent with the Rolls-Royce RB211-535 turbofan engine found on a Boeing 757 operated by American Airlines. The circular engine disk debris is just the right size and shape to match the compressor stages of the RB211, and it also shows evidence of being attached to a triple-shaft turbofan like the RB211. While many have claimed the wreckage instead comes from a JT8D or AE3007H turbofan, we have shown that these engines are too small to match the debris. Furthermore, we have studied what clearly looks like the outer shell of a combustion case and found that its fuel injector nozzle ports match up exactly to those illustrated in Boeing documentation for the RB211-535 engine. There is simply no evidence to suggest these items came from any other engine model than the RB211-535, and the vast majority of these engines are only used on one type of plane–the Boeing 757.