What devices are used to hold the fly section of a ladder in place once extended?

Pawls, often referred to as dogs, are specialized devices that secure the fly section of a ladder in place after it has been extended. When the ladder is extended, the pawls engage with the rungs or ladder structure, preventing the fly section from sliding back down under its own weight or due to external forces. This locking mechanism is crucial for the safety of firefighters and ensures stability while the ladder is in use. The pawls are typically designed to release easily, allowing for the ladder to be retracted when necessary, providing both security during operation and convenience for storage or transport.

Other devices mentioned, such as clamps, brackets, and hooks, may have different purposes in the context of ladders or firefighting equipment but do not serve the specific function of locking the fly section in place after extension. Clamps may be used for securing items or stabilizing equipment, brackets might provide support or mounting options, and hooks could be utilized for hanging tools or securing lines, but they do not fulfill the role that pawls do in maintaining the structural integrity of an extended ladder.