Mercedes Acuna grabs Sgt. 1st Class Guadalupe Alexander's hair as Command Sgt. Maj. Ruth Potter, 71st Transportation Battalion, CSM, coaxes them in the next self defense release technique. The moves were part of an Army Logistics University self-defense class April 12 that was open to community members. The class was organized by sexual assault response coordinators in recognition of Sexual Assault Awareness and Prevention Month.