You are correct, there is a possibility for a crossfire scenario. There are also other possibilities, such as a person close enough to see clearly keeps his head, controls his gun, and hits his mark. Also the possibility that a return shot makes him decide to leave rather than continue shooting. Also the very real possibility that a theater without a firearms restrictions may not have been targeted. It seems amazing that most of these shootings occur in places that firearms are prohibited. I am having trouble finding a mass shooting that occurred anywhere where firearms or concealed carry was allowed. Can anyone help me find any?