No operation is successful without information. Interviewing witnesses is the only way to get that information. It should have top priority upon reaching the scene. Every available witness should be interviewed.... 

While proceeding to the location every member of the team should be analyzing the nature of the call, water, weather conditions, and what will be done once on location. The first thing anyone notes is... 

March 15, 1997, Central Washington Four divers died as the result of an attempt to clear old cars from an irrigation siphon. The first two divers broke through ice to enter the 40-degree water; one wore...