Total aside. Human interest.

The Six Sigma Handbook (Quality) was edited by Forest W. Breyfogle III. Why has he been interested in Quality?

https://en.wikipedia.org/wiki/1956_G...-air_collision

The TWA Flight Engineer in the crash was his father, Forest W. Breyfogle Jr.

What started as the tragic death of his father, grew into a passion of preventing airplane accidents, and quality in general.

“Brey”, his father and the entire family, were active members of the church I grew up in.