I flew into LaGuardia from Knoxville last Sunday. A plane ahead of us landed safely but reported that the runway was slick. They closed the airport to take care of it while we were in a holding pattern for 20 min or so (in clouds/fog). Then we approached LaGuardia again only to be put into a holding pattern again.

Although circling in zero vis was unsettling (I was a passenger on a UsAir/American flight- I am not a pilot), the calls very well may have saved my life.