To force an inward-opening door, which part of the Halligan bar is inserted between the door and the jamb?

Forcing an inward-opening door effectively requires understanding the components of a Halligan bar and how they interact with the door and frame. The adze is the correct part to be inserted between the door and the jamb because its flat, wedge-shaped configuration is designed to create leverage. By inserting the adze into the gap, firefighters can apply force to the door, allowing it to be pushed open more readily.

The design of the adze allows it to effectively spread the door away from the frame, which is essential when dealing with inward-opening doors that are typically secured tightly against their frames. Its shape is optimized for this type of application, thus facilitating the forcible entry process safely and efficiently.