An Adopt-A-Highway sign is expected to go up by Jan. 1 in St. Louis County for a group that has questions about the government’s official version of the Sept. 11, 2001, terrorist attacks.

The “St. Louis 9-11 Questions Meet Up Group” has agreed to keep clean a stretch of road in Creve Coeur.

Group organizer Donald Stahl believes the World Trade Center towers in New York may have been brought down by a controlled demolition.

His group also believes United Flight 93 crashed in Pennsylvania into a hole that was already there, and members suspect it was a missile, not a plane, that hit the Pentagon.