Throughout the Obama administration, several Muppet characters have appeared at the ceremony to read The Night Before Christmas" by Clement C. Moore with First Lady Michelle Obama and participate in the lighting ceremony. The 2011 TV broadcast on PBS was produced by the National Park Foundation. Underwriters Laboratories served as premier sponsor, framing the special with their commercials featuring the Muppets. Abby Cadabby appeared at the event on December 6, 2013, reading "The Night Before Christmas" with Michelle Obama.