fact that he was helping others is just typical Bill."

Cumbria police Chief Constable Craig Mackey said Barker was "a wonderful police officer and a real family man".

"Bill is a hero who died saving the lives of others and our thoughts are with his family at this devastating time. He was a much loved friend, colleague and an inspiration to everyone he knew – he will be sadly missed."Craig Larman's excellent research on the history of iterative development. It was Larman who figured out that Royce's original paper described waterfall as what not to do, Larman who figured out the history of how the DoD adopted it anyway (basically, they didn't read the second half of the paper), and Larman who tracked down the guy who had been responsible for that decision. IIRC, they met for lunch in Boston and his first words to Larman were "I'm so sorry!" While the quality of Larman's research is debatable, we definitely know that the DOD has learned since then. In 1994 MIL-STD-498 supersedes DOD-STD-2167. It proposes three different strategies: Grand Design which corresponds to the DOD Waterfall.

Incremental which starts a full requirements analysis but uses multiple development cycles.

Evolutionary