Two parallel Pentagon programs -- one Air Force, one Navy -- exploring future air dominance needs that top Defense Department brass want in sync appear to be moving at different paces, according to the fiscal year 2017 budget request. The Air Force has scrapped notional plans to launch a sixth-generation fighter in fiscal year 2018 and instead adopted a plan to annually update policymakers with "strategic planning options," a move accompanied by a funding increase in fiscal year 2017. That...