Directed Energy projects typically fall into two categories: laser and microwave. Laser projects range from completely non-lethal targeting lasers to dazzlers, such as the Saber 203 used by US forces during the Somali Civil War and the more recent PHaSR dazzler, to powerful missile defense lasers such as the chemical oxygen iodine laser (COIL) used in the YAL-1A project now led by the Missile Defense Agency. A continuation of the Airborne Laser experiment is also being conducted in the form of the Advanced Tactical Laser, which is a Special Forces demonstrator project to mount a COIL system in a tactical AC-130 gunship. Microwave technologies are being advanced for use against both electronics and personnel. One example of an anti-personnel microwave project is the "less-than-lethal" Active Denial System, which uses high-powered microwaves to penetrate less than a millimeter into the target's skin, where the nerve endings are located.