While some tips are more feasible than others , Tucker says , `` They 're all legitimate because people have connections to these objects , to these symbols . '' The flag that became the subject of an iconic 9/11 photo went missing after it was hoisted . Tips roll in after CNN Films ' documentary `` The Flag '' airs , but none deemed viable . Possible sighting have come in Las Vegas , Houston , West Point and Oskaloosa , Iowa . Co-director says , `` It 's more than looking for a flag . We want to find out what happened with this flag.
The flag that became the subject of an iconic 9/11 photo went missing after it was hoisted . Tips roll in after CNN Films ' documentary `` The Flag '' airs , but none deemed viable . Possible sighting have come in Las Vegas , Houston , West Point and Oskaloosa , Iowa . Co-director says , `` It 's more than looking for a flag . We want to find out what happened with this flag.