AP Photo/Sue Ogrocki
People gather under the Survivor Tree at the Oklahoma City National Memorial, Monday, April 19, 2010, during the memorial ceremony marking the 15th anniversary of the Oklahoma City bombing.
AP Photo/Brynjar Gauti
A plume of ash from the volcano under the Eyjafjallajokull glacier covers the farm of Pall Eggert Olafsson, in Thorvaldseyri, Iceland, Monday, April 19, 2010. Meteorologists in Iceland said eruptions from the volcano were weakening and the ash was no longer rising to a height where it would endanger large commercial aircraft.
AP Photo/Andy Wong
Tibetan children sit inside their temporary makeshift school as they wait for their class to start in earthquake-hit Yushu county, northwest China's Qinghai province, Monday, April 19, 2010.
AP Photo/Wong Maye-E
Soldiers sleep on the sidewalk while a passerby walks past on Monday, April 19, 2010, in Bangkok, Thailand. Thai troops armed with assault rifles moved into Bangkok's central business district Monday morning to stop thousands of anti-government protesters and threatening to march down the capital's "Wall Street."
AP Photo/David Ramos
Passengers heading to Tel Aviv rest next to their baggage at the El Prat del Llobregat Airport in Barcelona, Spain, on Monday, April 19, 2010.
Spain has offered to let Britain and other European countries use its airports as stopovers to get passengers stranded by the volcanic ash cloud traveling again, a minister said Monday. For passengers who arrive in Spain, the plan is to beef up train, bus and ferry services to get them to their destinations.
AP Photo/Charles Krupa
Wakako Tsuchida of Japan breaks the tape to win the women's wheelchair division of the 114th running of the Boston Marathon in Boston, Monday, April 19, 2010.
