Fireworks explode over the Washington Monument in Washington, as the United States celebrates its 234th birthday, Sunday, July 4, 2010. (AP Photo/Cliff Owen)
A military honor guard carries the casket of Sen. Robert Byrd out of the Capitol in Washington, Thursday, July 1, 2010. (AP Photo/Chip Somodevilla, Pool)
Two newborn Sumatran tiger cubs crawl around in hay at Point Defiance Zoo & Aquarium, in Tacoma, Washington, June 16, 2010. They were born on May 25 to zoo residents Jaya and Bali. The male cub (foreground) and female will be named by a public vote. (AP photo/The News Tribune, Peter Haley)
A memorial to those who lost their lives in the May 18, 1980 eruption of Mount St. Helens is shown on the 30th anniversary of the volcano’s eruption, Tuesday, May 18, 2010, in Washington state. (AP Photo/Ted S. Warren)
New tree growth is shown amidst downed trees that remain from the violent 1980 eruption of Mount St. Helens on the 30th anniversary of the volcano’s 1980 eruption, Tuesday, May 18, 2010, in Washington state. (AP Photo/Ted S. Warren)
Prairie lupine and moss grow in the soil that was once a part of the top of Mount St. Helens in Washington. A massive avalanche carried the soil down the Toutle River Valley. (Dean J. Koepfler/Tacoma News Tribune/MCT)
The massive crater of Mount St. Helens and the lava dome that grew in it several years earlier is seen from the Johnston Ridge Observatory at Mount St. Helens National Volcanic Monument, Friday, May 14, 2010, near Toutle, Washington. Tuesday will mark the 30th anniversary of the big eruption of May 18, 1980, that killed 57 people, knocked down a forest, filled local rivers with mudflows and rained ash far downwind. (AP Photo/Elaine Thompson)
In this May 7, 2010 photo, Mount St. Helens is shown at daybreak in Washington state. The volcano erupted violently 30 years ago on May 18, 1980. (AP Photo/Ted S. Warren)
In this July 22, 1980 file photo, Mount St. Helens erupts in Washington State. (AP Photo/File)
In this May 20, 1980 file photo, a camper containing two victims of the Mount St. Helens eruption sits amidst the gray landscape about 8 miles from the mountain in Washington state. Markings in the volcanic ash in front of and behind the camper were left by a helicopter and a searcher who found the victims on Tuesday, May 20, 1980. (AP Photo/File)
In this May 20, 1980 file photo, trees knocked down by the May 18, 1980 eruption of Mount St. Helens are shown along a logging road near the south fork of the Toutle River in Washington state. (AP Photo/Perry, File)
In this May 19, 1980 file photo, Mount St. Helens erupts in Washington state, sending a plume of ash many miles skyward. As the 30th anniversary of the eruption approaches on May 18, 2010, scientists are still learning from studying how the area devastated by the blast continues to recover from the eruption. (AP Photo/Jack Smith, File)
In this May 18, 1980 file photo, Mount St. Helens in Washington state, sends a plume of ash, smoke and debris skyward in a violent eruption. As the 30th anniversary of the eruption approaches on May 18, 2010, scientists are still learning from studying how the area devastated by the blast continues to recover from the eruption. (AP Photo/File)
In this May 17, 1980 file photo provided by the U.S. Geological Survey Cascades Volcano Observatory, Mount St. Helens is shown in Washington state, the day before a massive eruption killed 57 people, as viewed from what came to be known as Johnston Ridge, about six miles from the volcano. (AP Photo/Courtesy USGS Cascades Volcano Observatory, Harry Glicken, File)
