He also wounded policemen, firemen and civilians. Firemen and rescue workers can use ad hoc networks to communicate and rescue those injured. Clergy, police, firemen, and civil defense workers were in this category. The fire was quickly put out by Shanghai's firemen. A December 2012 junkyard fire required the help of 170 firemen to extinguish. One of the firemen finds that his parents' new toaster oven caused the fire. The city deputized firemen and trash collectors to help handle demonstrators. The regulars were thus supported by around 5,000 firemen, 3,000 gendarmes, and 15,000 sailors. This includes forming relationships with local police and firemen. Soon after, they marched through the streets escorted by 5,000 firemen. Two firemen from the brigade, a Sgt. Two black firemen there were also given the day off. This resulted in a fireball which killed and injured firemen and spectators. There were 24 firemen for two shifts. They were normally divided into two groups, the Firemen and the Trimmers.