OK... here is a question for the aviation techies..... How is it possible for Fog to still close an airport in this day and age... I know that EZE isn't the best (by far) in terms of technology, but I thought that EZE had sufficient rating and equipment to operate under zero visibility or....? Or is it that I am failing to remember that for zero visibility you not only need the airport to have the right hardware, but also the aircraft have to have the right equipment....? What say the aviation techies.....? PS: Im asking this because I arrived today at EZE at 0500hs only to find out that the airport is friggen; closed since 0000hs yesterday due to intense fog...... doesn't ILS allow aircraft to land with zero visibility....???????