Trainer reviews forceful-entry tactics and ventilation options for commercial buildings

Trainer walked crews through forceful-entry options and cautioned that many rear doors on commercial buildings are solid metal and intended to keep people out, so officers must weigh whether cutting or using a store entrance is faster. On front glass doors, the instructor suggested simple non-destructive techniques "spin that lock out and take a screwdriver and flip the lock" to avoid breaking glass when possible.

On ventilation, the group discussed natural ventilation from automatic front doors during daytime alarms and mechanical options such as setting fans in line ("piggyback") to pressurize a space and push exhaust out a planned opening. The instructor also described hydraulic ventilation using a smoothbore; when using a smoothbore the nozzle should be opened to roughly half-bail to create effective airflow.