The Government Accountability Office today sustained two protests filed against the Air Force by Sikorsky and Lockheed Martin over the service's selection of Boeing's HH-47 Chinook as its next-generation combat search and rescue helicopter, according to a GAO statement. Now the GAO is recommending that the service "re-open discussions with offerors" and request revised proposals from each of the three competitors, the statement reads. "If the evaluation of revised proposals results in a determination that Boeing's proposal no longer represents...