House and Senate lawmakers have agreed the Pentagon needs to conduct a major review of its roles and missions, but decided to forgo measures that would have mandated revalidations of several key weapon systems and prohibited increases in the number of U.S. troops. The roles and missions section of the fiscal year 2019 defense authorization bill was first proposed by the Senate and would have fenced funding for the Marine Corps' Amphibious Combat Vehicle modernization program, as well as directed...