A student in the Joint Non-Lethal Weapons Program class reacts after throwing a sting-ball grenade during a non-lethal weapons demonstration at Joint Base Langley-Eustis, Virginia, Nov. 8, 2018. A team of JNLWP instructors conducted the demonstration to show senior officers what options are available to implement at their commands. (U.S. Air Force photo by Airman 1st Class Monica Roybal)