After delaying the start of an official competition for an off-the-shelf light-attack aircraft, the under secretary of the Air Force confirmed today the service would continue an experimentation campaign and perhaps broaden its pool of aircraft contenders. The service conducted the second, and what was largely expected to be the final, phase of light-attack aircraft experimentation this summer after narrowing its field of likely competitors to two: an Embraer and Sierra Nevada Corp. team offering the A-29 and Textron, which...