In one of the close shots Reid's scarf is wrapped around his neck, in the next shot, when Morgan and Elle approach him, it is hanging loosely. There was no time for Reid to change the position of the scarf.
In the closing scene, when it shows the jet, the tail/registration number on the engine of the plane is backwards, indicating that the shot was flipped horizontally and never corrected to make up for the backwards number.
2:24 minutes in, a hand can be seen in the top left corner of the screen for less than a second.
There is no McAllister County near Massanutten Mountain. It is actually located in Rockingham County just outside of Harrisonburg, VA.