“The PM shall use SBA and M&S during system design, system T&E, and system modification and upgrade...PMs shall integrate SBA/M&S into program planning activities; shall plan for life-cycle application, support, documentation, and reuse of models and simulations; and shall integrate SBA/M&S across the functional disciplines.” 
DoD Policy
DoD Regulation 5000.2R Mandatory Procedures for Major Defense Acquisition Programs, 10 June, 2001
•  Old Reg:  “... shall be applied, as appropriate…”
•  Now no conditional out:  SHALL support all lifecycle activities
•  Key on 2nd sentence, but highlight ‘shall’ throughout
•  Reg is detailed to insure clear meaning