Gene Keller, long-time vice president of human resources at VST Corporation, is helping one of his peers, the vice president of marketing, develop information for a potentially game-changing business opportunitya major program for a worldwide manufacturer. To be considered for this opportunity, VST must demonstrate its ability to staff the program immediately upon award. To estimate VST's ________ labor supply, Gene uses his human resources information system (HRIS) to generate data regarding turnover, terminations, retirements, promotions, and transfers