Indian Air Force's combat capabilities will get a major boost as eight US-made Apache AH-64E attack helicopters are set to be inducted into the IAF on September 3. The AH-64E Apache is one of the world's most advanced multi-role combat helicopters. The IAF had signed a multi-billion dollar contract with the US government and Boeing Ltd in September 2015 for 22 Apache helicopters. The first four of the 22 helicopters was handed over to the air force by Boeing on July 27.