High Quality Content by WIKIPEDIA articles! Marine Light Attack 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", HMT-303 trains newly commissioned Naval Aviators, conversion pilots, refresher pilots, and enlisted aircrew on the AH-1W SuperCobra and the UH-1N Twin Huey. HMLAT-303 is also to begin training with the new UH-1Y Venom and AH-1Z Viper helicopters. It is part of Marine Aircraft Group 39 (MAG-39) and the 3rd Marine Aircraft Wing (3rd MAW).