Marine Light Attack Helicopter Training Squadron 303 (HMLAT-303), is a United States Marine Corps helicopter training squadron stationed at Marine Corps Base Camp Pendleton, California. Known as the "Atlas", HMLAT-303 trains newly commissioned Naval Aviators, conversion pilots, refresher pilots, and enlisted aircrew on the new Bell UH-1Y Venom and Bell AH-1Z Viper helicopter as well as the Bell AH-1W SuperCobra.