The Mann Gulch fire, which overran 16 firefighters in 1949, is analyzed to show its probable movement with respect to the crew. The firefighters were smoke-jumpers who had parachuted near the fire on August 5, 1949. While they were moving to a safer location, the fire blocked their route. Three survived, the foreman who ignited an escape fire into which he tried to move his crew, and two firefighters who found a route to safety. Considerable controversy has centered around the probable behavior of the fire and the actions of the crew members and their foreman. Modern safety techniques used by 73 firefighters who escaped injury after being trapped on the Butte Fire in 1985 are described for comparison.