Which foam application technique involves deflecting the foam stream with an object?

The bank-down method involves directing the foam stream towards a surface and then deflecting it off that surface to create a blanket of foam over the fire. This technique is effective because the foam can flow down the surface and spread out, minimizing the risk of reignition by ensuring full coverage over the fuel.

It is particularly useful in situations where the fuel source is on a horizontal surface or there is a need to control a wider area, as it helps to enhance the foam's adhesion and durability. By using a solid object or surface to manipulate the foam application, firefighters can effectively manage challenging fire scenarios and achieve better suppression results.

While other methods, such as the rain-down technique or direct application method, have their own advantages and contexts for use, the bank-down method specifically utilizes deflection to maximize foam coverage, making it a unique and strategic approach in fire suppression situations.