 Firefighters on that incident were surprised at how fast engine 2942 became engulfed in fire. One of the questions brought up in the numerous discussions that followed this incident centered on the protection an engine might afford during a burn over. In 1997, the Forest Service Technology and Development Program published Surviving Fire Entrapments, Comparing Conditions Inside Vehicles and Fire Shelters. This study compares the environment inside a fire shelter and inside an engine during identical fire conditions. It does not attempt to give any recommended course of action. In the event of a burn over, it's up to the engine operator to evaluate the given situation and conditions before deciding to either abandon the engine or seek refuge inside the engine cab. This study simply provides us with some quantifiable data and observations. Please review the excerpt from this study and complete the next exercise in your student workbook.