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.