House and Senate conferees, amid a veto threat from the White House and opposition from Democrats over a budgeting "gimmick," have agreed on a proposed fiscal year 2016 defense authorization bill that would significantly change the management of the Pentagon's acquisition system by increasing the power and accountability of the military service chiefs. Senate Armed Services Committee Chairman Sen. John McCain (R-AZ), who at a press conference Tuesday appeared with his House counterpart Rep. Mac Thornberry (R-TX) and ranking Democrats...