anita: the enemy has more control on where the missile is going to go. let s put up a picture to illustrate what the trajectory of the missile looks like. you see there it is launched from a rocket, it goes above the atmosphere and goes undepicted d detecte by radar. it s going to be more expensive than systems and a lot of radars and it s flying and below the radar, you will need to fly a lot of radars looking separate up than further out with normal intercepter against an intercontinental ballistic missile. anthony: china test fired the hypersonic missile. how behind are we, where are we in terms of development and