TULSA, OK --  The TSA conducted a security drill at Tulsa International Airport Wednesday afternoon. 

TIA officials say the drill involved a security breach in one of the airport's concourses. 

Special security gates in the terminal building at Tulsa International Airport can isolate each of the two concourses individually. 

Airport officials say when activated, the gates allow for the rest of the terminal to remain open, while one of the concourses is locked down.