Public relations firm Cohn & Wolfe, an operating unit of ad giant WPP Group's Young & Rubicam, serves clients from more than 50 offices spread out around the globe. Its services include crisis management, investor relations, media relations, and public affairs. It also helps clients take the plunge into digital and social media like Facebook and Twitter. The company's specialty divisions provide expertise in the health care, consumer, corporate, energy, entertainment, sports marketing, and technology sectors. Clients have included such notable brands as Taco Bell, LG Electronics, and The Medicines Company. The firm was founded by Bob Cohn and Norm Wolfe in Atlanta in 1970.