Fires in high-rise buildings create unique safety challenges for buillding occupants and fire fighters. Smoke and heat spreading through the corridors and the stairs of a building during a fire can limit building occupants' ability to escape and can limit fire fighters' ability to rescue them. In 2002, there were 7300 reported fires in high rise structures (structures 7 stories or more). The majority of these high rise fires occurred in residential occupancies, such as apartment buildings. In fires that originated in appartments, 92 % of the civiliam fatalities occurred in incidents where the fire spreads beyond the room of origin .