There was a fight going outside your store. I think the security guard arrested a thief and the thief put up a fight.
The security guard's partner asked the greeter to call for back up. He asked them to call a code 9 or something like that. Apparently this caused a scene and a lot of your employees went out the store to help the security guard. Customers went out to see what was going on.
Lucikly no one was hurt.
However this kind of procedure would not only put your customers in danger but all those employees helping out as well. Who knows where this thief was headed.