Also known as PBED (Plan-Brief-Execute-Debrief) the FLEX methodology is an iterative IMS designed by fighter pilots to achieve operational excellence in combat, the methodology was adapted to a business practice in 1998. Elements of the methodology are utilised in the agile manifesto commonly used by software developers. As an iterative process it values adaptation of strategy to real world influences through the practice of debriefing. Debriefing is a tool utilised by organisations to drive cultural change, specifically "Nameless and Rankless" where who are and what your position is in an organisation is irrelevant when assessing results and developing solutions: