From Wikipedia:
The system most often described is “an orbiting tungsten telephone pole with small fins and a computer in the back for guidance”. The system described in the 2003 United States Air Force report was that of 20-foot-long (6.1 m), 1-foot-diameter (0.30 m) tungsten rods, that are satellite controlled, and have global strike capability, with impact speeds of Mach 10.
The time between deorbit and impact would only be a few minutes, and depending on the orbits and positions in the orbits, the system would have a world-wide range. There would be no need to deploy missiles, aircraft or other vehicles
Be careful what you wish for. Kinetics have a lot less nasty side effects than nukes, so the temptation to use them would be greater. I mean something that doesn’t even explode would never be called a weapon of mass destruction right? ;-)
(Yes, I’m fully aware of the amount of kinetic energy a falling object from earth orbit can deliver. Others are not. Some of them may even be attorneys.)
What kind of damage would that cause? Like if you would hit Times Square with one?