John Mellencamp will be backed by the Boston Pops Esplanade Orchestra when he performs several of his hits on Boston Pops Fireworks Spectacular, a special airing July 4 on CBS. Craig Ferguson, host of The Late Late Show With Craig Ferguson, will also host the live telecast from the Charles River Esplanade in Boston. … In related news, Steve Azar will headline a Fourth of July concert in Washington, D.C. The performance near the Washington Monument will also feature the U.S. Army-Navy Band. The free show is sponsored by the National Park Service.