U.S. President Barack Obama delivers remarks at a concert honoring singer-songwriter Carole King at the White House in Washington, DC on May 22, 2013. Carole King is awarded the 2013 Library of Congress Gershwin Prize for Popular Song. UPI/Yuri Gripas/Pool

Vin Diesel and Michelle Rodriguez attend the premiere of the new motion picture crime thriller "Fast & Furious 6", at the Gibson Amphitheatre in Universal City, California on May 21, 2013. UPI/Jim Ruymen

A path of destruction is seen in the aftermath of a series of tornadoes in Moore, Oklahoma, May 21, 2013. On May 20 tornadoes swept through severals towns south of Oklahoma City leaving a path of destruction and killing at least 51 people, including at 20 children. UPI/J.P. Wilson

The Rolling Stones perform as part of the group's '50 and Counting' tour at Staples Center in Los Angeles on May 20, 2013. UPI/Jim Ruymen

Premiere of the motion picture comedy "The Hangover Part III", at Westwood Village Theatre.

Photos from the 10th Annual GLSEN Respect Awards at Gotham Hall in New York City on May 20, 2013. UPI/John Angelillo

The 100th Chelsea Flower Show in London