Dr Fletcher noted that all the clinical entries for one of the patients who died were made by the same doctor, "morning, afternoon and evening... for five consecutive days".
Two to three cars work a morning shift and three or four patrol the Atlanta airport in the afternoon and evening, said Delta's Michael Cousin, who supervises the airline's car shuttle.
National Weather Service meteorologist Steve Anderson said there will be low clouds in the morning, partly cloudy skies in the afternoon and a mostly clear outlook for the evening.
It is known to have calved from the Ronne Ice Shelf sometime during the afternoon or evening of 4 May as satellite imagery indicates that the ice shelf was still intact on that morning.