First Allied Securities, a San Diego-based financial services firm, will close its Chesterfield office at the end of the year, leaving more than 30 local employees with uncertain futures, according to people familiar with the matter. Joseph Kuo, a spokesman for the company, said First Allied is in the middle of a "transformational effort to deliver next generation engagement experience for the financial advisors we support. As part of that effort, we took a comprehensive review of business processing...