A Tennessee woman burst into a Burger King door after she allegedly became furious about the waiting time, police said.
Observation photos show the intact customer leaning through the open window of the Memphis fast food joint while swinging a black gun.
In one image, released by police on Friday, the woman holds up the firearm with both hands and points it inside the door window.
Police said the woman pulled over to the restaurant on Tuesday and was arguing with employees because she felt her order was taking too long to complete.
She grabbed the gun from her car and fired several shots at staff, police said.
The employees fled through a back door and were unharmed.
Cops searched for the disturbed patron. A reward of up to $ 1,000 is offered by Crime Stoppers of Memphis and Shelby County Inc., for information leading to an arrest.