DENVER — The National Cattlemen's Beef Association here has named Trevor Amen to the position of manager, channel marketing, western region, replacing Susan Puentes. Amen most recently was market analyst, national meat purchasing office, at Whole Foods Market. He began his career as a marketing trainee at Safeway and later served as a national commodity specialist and buyer at Safeway. At NCBA, Amen will work with retailers to market beef, with an emphasis on increasing demand for beef among their current customers. In his new post, Amen reports to Steve Leigh, director, channel marketing.