PITTSBURGH—United States Steel Corporation has named Erin DiPietro manager, executive communications; Courtney Boone manager, media relations; and Sarah Cassella public affairs representative. DiPietro began her career at US Steel in 2002 in public affairs, primarily working in internal communications and creative services and has served as a senior public affairs representative since 2009. Boone joined in October 2007 as a public affairs specialist after spending five years in Washington, DC, as press secretary for Sens. Ted Stevens of Alaska and Arlen Specter of Pennsylvania.

LOS ANGELES—Southern California Gas has named Denita Willoughby as regional vice president of external affairs. Willoughby will lead the company's community relations, public affairs and media and employee communications efforts.  Previously, Willoughby was chief executive officer of The Willoughby Group, a management consulting firm she founded that specialized in executive services, business development and government relations. Before starting her own firm, Willoughby was with AT&T for more than 15 years.

LOS ANGELES—NBC Universal has promoted Hilary Smith to senior vice president, communications for NBC Universal Entertainment & Digital Networks and Integrated Media. Smith will oversee strategic communications and serve as the lead spokesperson for the division, which includes Telemundo, mun2, Bravo Media, Oxygen Media, Style Media, and more. Most recently, Smith oversaw communications for E&DN/IM's digital businesses, Fandango, DailyCandy, iVillage and Television Without Pity.