My first introduction to should cost occurred about 5 years ago when holding a nonacquisition billet. This peripheral perspective caused me to reach out to the Defense Acquisition University (DAU) community to learn more. As I recall, one remark about will cost and should cost was that they resembled a kitten with a yarn ballthings would get complex in due course. I chuckled, but I also kept tabs as the next few years passed, and I ended up directly handling should cost for the Air Force Life Cycle Management Centers (AFLCMC) Armament Directorate at Eglin Air Force Base (AFB) in Florida. That is where I got the hot wash of should costs evolution and quick handoff from a departing Service member who was the primary point of contact since introduction to the weapons portfolio in 2013.