This picture shows Mack Petry defending against a knife attack.

This picture shows Mack Petry demonstrating self-defense technique #4.

This picture shows a Lotus student performing a breakfall.

A Lotus class held in the gymnasium at the United States Air Force base.

This picture shows students receiving their new belts after a belt promotion test.

This picture was taken at a public demonstration showing black belts Mack Petry and Eugene Shelton.