Gregory A. Samay was named chief of staff and CIO of the $1.2 billion Arlington (Va.) County Employees' Retirement System, said Steve Ivins, chairman of the board of trustees. Mr. Samay replaces Bruce Kallos, who resigned as executive director of the system last August after an audit uncovered questionable travel and entertainment expenses. Mr. Samay "obviously will review everything and bring fresh eyes" to the plan, which has a $76 million surplus, Mr. Ivins said. Mr. Samay was assistant treasurer and director of capital markets at Yum! Brands Inc., Louisville, Ky., responsible for management of its $550 million pension fund and $350 million 401(k) plan, said Gregory Keyes, senior manager of corporate finance and capital strategy. Mark Hutchens, assistant treasurer for corporate finance and capital strategy has assumed most of Mr. Samay's responsibilities, Mr. Keyes said.