The Air Force's $156.3 billion fiscal year 2019 budget proposal calls for 48 new F-35 Joint Strike Fighters, 15 KC-46 aerial refuelers and 36,000 Joint Direct Attack Munitions. The budget request would provide $25.7 billion for the service's procurement account -- up from $24.8 billion in the FY-18 request -- and $30.4 billion for research and development in a $6 billion increase over its FY-18 request, according to overview documents released today. It also includes $49.9 billion for operations and...