What is a hangfire in relation to mortar rounds?

A hangfire refers specifically to a situation where there is a delay between the firing of the primer and the ignition of the propellant, resulting in a mortar round not firing immediately as expected. This situation can be particularly dangerous because it can lead to uncertainty about the status of the round, posing risks to both personnel and equipment. After firing, the round may seem as though it has not detonated, leading observers to believe it is safe to approach, when in fact it may fire unexpectedly after a short delay. Understanding the nature of a hangfire is crucial for safety protocols and response procedures during operations involving mortar rounds.