what is the most powerful military helicopter?
['HAL Light Combat Helicopter. [00:26]', 'Agusta A129 Mangusta. [02:11]', 'CAIC Z-10. [04:33]', 'Eurocopter Tiger. [05:04]', 'Bell AH-1 Cobra. [08:26]', 'Boeing AH-64 Apache. [09:54]']