 On this 4th of July, the president and first lady are using this holiday celebration to honor active duty military service members and their families. They've invited them to attend a barbecue on the south lawn of the White House. The smell of fresh barbecue has been wafting across the grounds, tempting the taste buds. The Bidens will deliver remarks in celebration of Independence Day, and then they will join their invited guests to view the fireworks display over the National Mall. CBS White House reporter Linda Kenyon.