Gary Mattingly retired as general manager of the $10 billion Los Angeles Fire & Police Pension System, effective Friday. Mr. Mattingly will return within the next two weeks to work until system officials select a replacement, said Tom Lopez, CIO. An RFP has been issued for an executive recruiting firm to help find a new general manager. The RFP is available from the fund's website, www.lacity.org. Proposals are due Dec. 15.