This is an eyewitness account by retired Pa. State Trooper, Larry Williams. He was playing golf the morning of 9/11 at the Oakbrook Golf Course in Jenners, PA, about 9.25 miles NW of the crater according to GoogleEarth.
He talks about how he heard and saw a commercial plane, being able to see the windows on the side, then seeing the plane nose-up, then bank on to its side before he lost it over the skyline.
After, he and his golf buddies speculated if it was in trouble and wondered if it had landed at the small airport in Indian Lake. Finishing his round, he saw police emergency vehicles going East on Rt 30, then saw a state police helicopter fly by.
When he was back at the parking lot, his friends came out of the Club House and told him that plane had crashed in Shanksville.
At no time in the interview did Mr. Williams mention hearing an explosion, seeing a fireball, or any resulting smoke trail.