Observe-Orient-Decide-Act (OODA) Loop
This OODA Loop Graphic, originally developed by Col John Boyd, USAF, provides key details associated with each step of the process.
For further details, consider reading the DAU.edu blog "IA&E Concepts -- OODA Loop" at URL https://www.dau.edu/blogs/iae-concepts-observe-orient-decide-act-ooda-loop