The Air Force general in charge of the air war in Afghanistan says a new strategy means warplanes in some cases may be buzzing rather than bombing some insurgents. Lt. Gen. Gilmary Hostage said Thursday that his job is to support the strategy of winning Afghan support as formulated by the new U.S. commander in Afghanistan, Gen. Stanley McChrystal. As part of that, McChrystal imposed restrictions on air power to limit civilian casualties. ... But the three-star general said that at times, it may be better to fly low over enemy forces and disperse them with noisy warplanes that threaten...