text:  The U.S. Army Chorus will pay special tribute to members of the military, past and present, and Olympic athletes will get a send-off. A Capitol Fourth will broadcast live on PBS and stream on YouTube. Elizabeth Blair, NPR News, Washington. The parent company of Saks Fifth Avenue has announced it signed a deal to buy upscale rival Neiman Marcus Group for $2.65 billion. As part of the agreement, online retailer Amazon will hold a minority stake in the merged company, which will be called Saks Global.