What type of door is typically easier to make visible during a primary search?

Glass doors are typically easier to make visible during a primary search for a few reasons. Their transparent nature allows for visibility of the surroundings on the other side, making it straightforward for firefighters or emergency responders to identify what lies beyond the door before opening it. This can reduce the risk of surprise encounters with fire or smoke, ensuring a safer approach during searches.

Additionally, the light-reflective quality of glass can make these doors easier to spot in low visibility situations, such as smoke-filled environments. Identifying and navigating through glass doors can be crucial for effective search and rescue operations, particularly in emergencies where every second counts.

Other door types, such as solid-core doors or hollow doors, do not provide the same level of visibility prior to entry, which can impede the search process. Similarly, inward swinging doors can pose challenges depending on the layout and design of the space, as they can limit visibility of the area behind them until they are fully opened.