20th annual concert coming to PBS

Here's a preview of the "The National Memorial Day Concert." It's the 20th annual airing of the presentation from the capitol on PBS. This year performers include pop singer Katharine McPhee; country crooner Trace Adkins; classical artists Denyce Graves, Ling Ling and Robert McDuffie; Broadway singers Brian Stokes Mitchell and Colm Wilkinson; and readings from actors Katie Holmes, Laurence Fishburne, Joe Mantegna, Gary Senise and Dianne Wiest, as well as former Secretary of State Colin Powell.