Currently serving Jasper County Fire Rescue in south Carolina along with Charleston County EMS.
Some departments have chosen to still cut holes in roofs and videos are abundant showing how dangerous this is. In my 25+ years of firefighting I have only cut a hole in a roof twice. My department uses Positive Pressure Ventilation and has not had a case yet where it didn't meet is goals. Now there are times where cutting holes in roofs are necessary but the risk vs gain has to be looked at. If you have a large strip mall fire and the fire is running the attic due to lack of firebreaks that were not required at the time you may have to cut a trench line across the roof to stop the flames from continuing. Any time a firefighter steps on to a roof the firefighter should sound the roof with and axe to feel if the roof is "spongy" if it is there is risk for collapse. The new construction has not been firefighting friendly, It is now that economics comes first where building components are lighter and fire burns through it faster thus collapse time shortens for us. So burn time prior to fire dept arrival and type of construction should be your big determinants of roof operations.
Join a volunteer Dept and get yourself ready. Down South we don't have civil service exams. When the vacancy occurs we advertize the position for applicants.
Not the smartest idea. Fingernail polish can be flammable. I would keep it in another location if you are hurting for the room.
Burns faster increases collapse time in structures is the simpliest way to answer that one.
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Tends to dues to the greater thickness of wood. Modern construction uses less wood and more synthetics that makes the fire spread dues to smaller amounts of surface depth thus burns faster.
Possession is not a violent crime or crime of moral terpuatude so I don't think it would disqualify
Kevlar will breakdown, also it is probably not OSHA compliant in that the uniform is 26 yrs old.
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