 It has been noted to have difficulties with internal power systems and loses accuracy over flight time.The US Department of Defense stated in 2010 that China has developed and reached initial operating capability (IOC) of a conventionally armed high hypersonic land-based anti-ship ballistic missile based on the DF-21.This is the first ASBM and weapon system capable of targeting a moving aircraft carrier strike group from long-range, land-based mobile launchers.