By 2030, Will County will surpass DuPage and become the most populous collar county, according to new projections. And the population of the Will County town of New Lenox will explode by more than 500 percent, to more than 100,000, according to the figures from the Northeastern Illinois Planning Commission. But there's a big catch -- the forecast assumes that a third airport in Peotone will be built by 2030, which would help draw many of the 600,000 new residents and 274,000 new jobs projected for the county. "An airport is far from certain," said Howard Lerner of the Environmental...