For the next two months, the flying skills and endurance of India's ace fighter pilots and their Russian-made Sukhoi fighters will face the ultimate test at the world's most advanced air force base. The multinational air exercise is scheduled to be held at Nellis base from August nine to 23. This is the first time that the Russian-made SU-30 MK-I fighters will make their appearance in multi-nation exercises to pit their skills against US and other NATO fighters.