The helpfull Stacker said: "...have some quite useful ground-based radar."
Jabba TG12 said:
"On unmanned sites subject to known limitations. And, given how often hardware limitations on the older now superceded platforms in the 80's and 90's used to leave holes, the lack of a permanently assigned Area Air Defence DDG potentially exacerbates the situation."
Politely suggest you do your homwork before posting...