If extreme spalling of the ceiling is noted and a section is hanging loosely, what action should be taken?

Not allowing training due to safety hazards is the appropriate response when extreme spalling of the ceiling is observed, particularly if sections are hanging loosely. This condition poses significant risks to the safety of individuals involved in the training activity. Spalling indicates that the structural integrity of the ceiling may be compromised, which could lead to further deterioration and potential collapse of ceiling materials. By halting the training, immediate action is taken to protect the safety of all participants, ensuring that no one is exposed to falling debris or other associated dangers.

It's essential to prioritize safety in any training scenario involving live fire exercises. Other actions, like notifying the fire chief or reinforcing the structure, may be necessary subsequently, but the immediate response must focus on safeguarding personnel by stopping the training activity until the hazards are assessed and mitigated.