CHICAGO - The newest workers at Chicago's O'Hare International Airport don't have to go through security screenings at the start of every day.
The city set free a herd of goats, sheep, llamas and other grazing animals to do some landscaping near the runways.
The grazing animals are part of the city's new eco-friendly efforts to maintain airport property.
They estimate a two-acre area will take about three weeks to clear.
The animals will be in protected areas - away from the runways.
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