Which method is not one of the standard ways to secure a water source from a hydrant?

The method identified as the correct choice, which is not one of the standard ways to secure a water source from a hydrant, is the cross lay. This practice is generally associated with how hose is configured on a fire apparatus and is typically used for deploying hose from the vehicle to the fire scene rather than accessing a water source.

In contrast, the forward lay and reverse lay are both standard methods for securing a water source from a hydrant. A forward lay involves connecting to a hydrant and laying hose towards the fire scene, which is often used to get water to an active fire quickly. The reverse lay starts at the fire scene and connects to a hydrant, allowing for easier management of hose and ensuring that the fire is supplied with water during firefighting operations.

The combination lay can also refer to both methods, allowing firefighters to adapt their approach based on the situation or terrain. Thus, the cross lay does not fit into the category of securing water directly from a hydrant in the conventional sense utilized in firefighting tactics.