Walgreens has chosen Encompass Events, a division of Encompass Media Group, for its national “Walk with Walgreens” program, which encourages people to stay healthy by walking. To start, the firm will work on the launch event, taking place April 6 at the Walgreens flagship in Times Square. It will begin with a press conference and continue with an “inaugural walk” led by a marching band, Alison Sweeney, host of NBC’s The Biggest Loser, and others. The program is also part of Walgreens’ Go Healthy: NY program. A 12-episode television show produced by Encompass Media Group along with NBC New York and Union Square Agency will debut on April 27.