ADN Editorial.  Alaska’s congressional delegation has urged expedited action by the Environmental Protection Agency to clear up Shell Alaska’s air permits, so that the oil company can drill an exploratory well this summer just offshore in the Beaufort Sea.  …   We can’t wait for perfection. We’ll never have it. The president’s Gulf spill commission pointed out that savvier government regulation and an industry getting religion about safety were vital to produce offshore oil responsibly. Those elements remain works in progress.  Shell’s Beaufort drilling in 2011 should give both company and regulators a better idea of exactly what progress we need to make. It’s a modest step worth taking.