(1) Whether all airports are equipped with the required radars; if not, (a) why is each airport not fully equipped in this regard and (b) when will each airport be fully equipped; if so, what are the relevant details; (2) what is the estimated cost to equip each airport fully; (3) whether there are any steps in place to ensure that all radar systems at all airports are continuously fully operational; if not, why not; if so, what are the relevant details?