**FILE** President Barack Obama gestures as he speaks during a dinner in honor of the Presidential Medal of Freedom awardees at the Smithsonian Museum of American History on Wednesday, Nov. 20, 2013 in Washington. (AP Photo/ Evan Vucci)
A crate marked for the apes is loaded into a truck at the commissary for morning delivery at the Smithsonian National Zoo, Washington, D.C., Wednesday, November 13, 2013. The commissary staff is responsible for storing, preparing, and delivering food to all the animals at the zoo.(Andrew Harnik/The Washington Times)
This undated handout image provided by the Smithsonian Institution shows a three-dimensional rendering of Abraham Lincoln’s life mask, held at the Smithsonian’s National Portrait Gallery. the Smithsonian is launching a new 3D viewer online Wednesday, Nov. 13, 2013, to give people a closer look at artifacts in their own homes. (AP Photo/Smithsonian Institution)
Male sumatran tiger cub Bandar reacts after being tossed into the water in his enclosure as a swim test to make sure he is capable of swimming and getting out of the water without any trouble at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Female sumatran tiger cub Sukacita reacts as Great Cats biologist Leigh Pitsko drops her into the water surrounding her enclosure as a swim test to make sure she is capable of swimming and getting out of the water without any trouble at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Male sumatran tiger cub Bandar runs away after being tossed into the water in his enclosure as a swim test to make sure he is capable of swimming and getting out of the water without any trouble at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Male sumatran tiger cub Bandar reacts after being tossed into the water in his enclosure as a swim test to make sure he is capable of swimming and getting out of the water without any trouble at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Isabelle Diaz, 8, right, and Andre Brooks, 9, left, of Waldorf, Md. play in piles of leaves on a beautiful fall day at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Sophia Sherman, 10, of Waldorf, Md. covers her friend Andre Brooks, 9 in piles of leaves on a beautiful fall day at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)
Andre Brooks, 9 of Waldorf, Md. smiles as friends cover him in piles of leaves on a beautiful fall day at the Smithsonian National Zoological Park, Washington, D.C., Wednesday, November 6, 2013. (Andrew Harnik/The Washington Times)