Kris W. Nelson (foreground), a Jiu-Jitsu student, shows

Kris W. Nelson (foreground), a Jiu-Jitsu student, shows Robin D. Jackson (left), the wife of Lance Cpl. Cassidy W. Jackson, a data network specialist with 8th Engineer Support Battalion, 2nd Marine Logistics group, the proper way to perform a defensive compliance technique during a self-defense class aboard Camp Lejeune, N.C., May 23, 2012. The spouses who participated in the class had the opportunity to become skilled at multiple escaping techniques, take downs and pressure points, and practiced each individual move step-by-step with the guidance of former Jiu-Jitsu students.