The Mil Mi-8 and the Mil Mi-17, Mi-17 1V and Mi-17V 5 are operated by the IAF for medium lift strategic and utility roles. The Mi-8 is being progressively replaced by the Mi-17 series of helicopters.[191][192] The IAF has ordered 22 Boeing AH-64E Apache attack helicopters, 68 HAL Light Combat Helicopters (LCH), 35 HAL Rudra attack helicopters, 15 CH-47F Chinook heavy lift helicopters and 150 Mi-17V-5s to replace and augment its existing fleet of Mi-8s, Mi-17s, and Mi-24s.[193] The Mil Mi-26 serves as a heavy lift helicopter in the IAF.