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Error here - Leveson, N. 2012. Engineering a Safer World: Systems Thinking Applied to Safety. Cambridge, MA, USA: MIT Press. STOPPED HERE NDIA (National Defense Industrial Association). 2003. Top 5 Systems Engineering Issues within DOD and Defense Industry: Task Report. Version 9, released 1/23/03. Available at: <a rel="nofollow" class="external text" href=""></a>. Accessed October 25, 2019.