http://www.nationalparks.org/discover-parks/index.cfm?fa=viewpark&pid=flmm - Hearing the words "flight 93" can bring mixed emotions among those who knew what happened on flight 93. The Flight 93 National Memorial Park signifies the sacrifices of 40 heroes. Heroes of flight 93 chose to crash their plane in a field instead of the city where millions of people could've died.