The "Nine Minute Array" is comprised of missiles whose linked sensors provide resolution comparable to a telescope the size of a planet... Or even larger, depending on the spread of the array.
Because it's made of semi-sentient munitions, it's also very, very dangerous to try to sneak up on.
Hey, that was my proximity fuse! Put that back.
Not until you place a call for me, okay?
Don't try this at home, kids.