HELINA (Helicopter based NAG) is a third generation fire and forget class anti-tank guided missile (ATGM) system mounted on the Advanced Light Helicopter (ALH). The system has all weather day and night capability and can defeat battle tanks with conventional armour as well as explosive reactive armour. The HELINA missile can engage targets both in direct hit mode as well as top attack mode. HELINA Weapon Systems is being inducted into the Indian Army (IA). A variant of HELINA Weapon System called DHRUVASTRA is being inducted into the Indian Air Force (IAF).