Susan Stuffle shows the class a comparison of the data they gathered from the statapult simulation at Wounded Warrior Battalion-West, June 1. After taking the class, many students took a different outlook on how to conduct business. Stuffle is a CPI black belt instructor with Headquarters Marine Corps Plans and Resources. - Susan Stuffle shows the class a comparison of the data they gathered from the statapult simulation at Wounded Warrior Battalion-West, June 1. After taking the class, many students took a different outlook on how to conduct business. Stuffle is a CPI black belt instructor with Headquarters Marine Corps Plans and Resources.