Sophie Hosking and Katherine Copeland have said winning Team GB's fourth Olympic rowing gold was "like a dream."
The pair comfortably claimed victory ahead of China in the final of the women's lightweight double sculls final at Eton Dorney to take Great Britain's overall gold medal tally to 10.
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.