The 5 M model is best used to get a big picture overview of how different types of human factors are related to one another when a problem caused by human factors is identified. A good example would be applying this to the Space Shuttle Challenger Accident at NASA in 1986. Keep in mind that although this is an accident, the HF tools can be used for any HF problem along with accidents or incidents. In the case of the Challenger, the was during the height of the Cold War with the Soviet Union, and NASA was trying to prove th