As they inspected an underground storage pool near the crippled Fukushima Daiichi nuclear power plant earlier this month, Tokyo Electric Power Co. President Naomi Hirose (4th from left) and other officials wore protective suits and masks. Radioactive water stored in some of the pits has leaked. Tokyo Electric Power Co./Reuters /Landov hide caption

itoggle caption Tokyo Electric Power Co./Reuters /Landov

President Obama during his news conference Tuesday at the White House. Larry Downing /Reuters /Landov hide caption

itoggle caption Larry Downing /Reuters /Landov

New Dutch King Willem-Alexander, Queen Maxima and their daughters wave to the crowd Tuesday from the balcony of the royal palace in Amsterdam. Patrick Van Katwijk /DPA /LANDOV hide caption

itoggle caption Patrick Van Katwijk /DPA /LANDOV

This image from a surveillance video helped investigators identify Tamerlan Tsarnaev (in black cap) and his brother, Dzhokhar (in white cap), as the main suspects in the Boston Marathon bombings. FBI.gov hide caption

itoggle caption FBI.gov

Jason Collins (left), then of the Washington Wizards, during a game this month against the Chicago Bulls. Jim Young /Reuters /Landov hide caption

itoggle caption Jim Young /Reuters /Landov

In the Hall of Remembrance at the U.S. Holocaust Memorial Museum, visitors can light candles in memory of the 6 million Jews killed by the Nazis and their collaborators during World War II. Nicholas Kamm /AFP/Getty Images hide caption

itoggle caption Nicholas Kamm /AFP/Getty Images

He'll have to find a new team now: Then-New York Jets backup quarterback Tim Tebow on the sidelines during a game last December. The team cut him from its roster on Monday. John Angelillo /UPI /Landov hide caption

itoggle caption John Angelillo /UPI /Landov

Tamerlan Tsarnaev, as seen in a video taken on April 15 near the finish line of the Boston Marathon. FBI.gov hide caption

itoggle caption FBI.gov

Glass and other debris were scattered across the street Monday after an explosion in Prague. Authorities initially suspected a gas leak. Dozens of people were injured in the Czech capital. Martin Mraz /EPA /LANDOV hide caption

itoggle caption Martin Mraz /EPA /LANDOV

Firearms for sale at a gun show in Annapolis, Md., on April 14. Andrew Harnik /The Washington Times /Landov hide caption

itoggle caption Andrew Harnik /The Washington Times /Landov