Several methods and a system of air extraction process from an emergency support system are disclosed. In one embodiment, a method of safety of a structure includes expediting an air extraction process from an emergency support system by including a RIC (rapid interventions company/crew)/UAC (universal air connection) fitting to a fill panel to fill a breathable air apparatus. The method may include ensuring that a prescribed pressure of the emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system.
