Another option in door control

(Fire Engineering)
Training Minutes: Sean Gray, Chad Christensen, and company offer a brief tutorial on the use of smoke curtains for controlling the flow path.
These videos are for training demonstration purposes only. When you perform these techniques at emergency scenes and evolutions, be sure to wear full PPE and adhere to your agency’s procedures and policies.
FireRescue Magazine: Using Smoke Curtains in Multi-Story Buildings