(Tulsa,Ok)--A holdup man fires a shot in desperation as he flees a credit union he had just robbed Friday morning. The lone gunman wore a scarf to cover his face and waved a silver handgun while demanding money. After grabbing some cash he began to leave. However the credit union's double doors lock during holdups. The masked gunman found himself trapped between two sets of glass doors. Police say that his when he fired one shot into the glass window of the outside door. He then kicked his way through the broken glass and fled the business on 51st Street near South Yale. No one was hurt.