As California waited Monday night to see if President Donald Trump would grant Gov. Jerry Brown’s request for emergency funding for 10,000 evacuees who lived in the shadow of the Oroville Dam, FEMA began preparing for the worse. The federal disaster-management agency’s Region 9, which oversees California and other Western states, has mobilized a 24-hour task force to coordinate its response with state and local agencies, said Mary Simms, a spokeswoman.