sentences:  The counter of the regular extinguisher rapidly increases back to 99 after a brief period of inactivity, while the oxygen tank and mask and the other extinguishers can only go back to 99 after being resupplied by allies in the level.Secondary equipment consists of a firefighter's axe, a rope for crossing gaps, a metal pole to reveal holes by checking for weak places in the floor, plastic explosives to blow through debris and certain wall sections, and CO2 bombs to extinguish large areas of fire.Only five plastic explosives and CO2 bombs can be carried at one time and can be replenished by an ally on the map.