The Air Force will spend $11 billion annually over the coming decade on its long-range strike inventory, an approximately 20 percent hike compared to the Pentagon's 2015 forecast, according to a new Defense Department estimate that for the first time accounts for Northrop Grumman's plan to develop and build the B-21 bomber. DOD disclosed the figures in a previously unreported annual report on its long-term aircraft plan approved April 28 by Deputy Defense Secretary Bob Work and shipped to lawmakers...