The Pavlof volcano erupts on May 16, 2013, as seen from the air from the southwest in Cold Bay, Alaska.

Lava fountaining is visible near the summit of the Pavlof Volcano on May 16, 2013, and steam and ash clouds rise from the northwest flank where a lava flow advances down the slope.

U.S. Border Patrol agent Daniel Tirado from the Rio Grande Valley Sector looks out at the Rio Grande river in Hidalgo, Texas March 28.

A U.S. Border Patrol agent from the Rio Grande Valley Sector searches for a group of illegal immigrants who crossed the Rio Grande River in Mission, Texas March 28, 2013. Brooks County has become an epicenter for illegal immigrant deaths in Texas. In 2012, sheriff's deputies found 129 bodies there, six times the number recorded in 2010. Most of those who died succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas.

The border fence is seen in Mission, Texas March 28, 2013. Most of those who died crossing the border succumbed to the punishing heat and rough terrain that comprise the ranch lands of south Texas.

People are taken into custody by the U.S. Border Patrol near Falfurrias, Texas March 29, 2013.

People sit on a couch at Casa del Migrante in Reynosa April 1, 2013. Casa del Migrante provides housing, food, clothing and medical care to people who are planning to cross the border, and to those who have been deported from the United States.

A man receives a haircut at Casa del Migrante in Reynosa April 1, 2013.

The unidentified grave of a person whose remains were found in the desert is seen in Falfurrias, Texas April 1, 2013.

This May 14 photo provided by the Wisconsin Department of Natural Resources shows a smoky wildfire in northwestern Wisconsin that has consumed 8,700 acres, destroyed nearly 50 structures and forced dozens from their homes. The DNR says the wildfire in Douglas County is about 90 percent contained Wednesday morning, meaning firefighters have stopped most of the fire from spreading.

A structure burns along Sutfin Road east of Comminsky Road in Highland Township, Wis., east of Solon Springs, Wis., on May 14. Crews from Wisconsin and Minnesota were trying to control a rapidly growing wildfire in northwestern Wisconsin that forced evacuations of the sparsely populated area. Several structures were destroyed in a mostly rural and wooded area east of Solon Springs as the forest fire grew to 9 square miles, the Wisconsin Department of Natural Resources said. No injuries had been reported.

An X-47B Unmanned Combat Air System demonstrator sits on an aircraft elevator on the aircraft carrier USS George H.W. Bush on May 6.

Sailors move an X-47B Unmanned Combat Air System (UCAS) demonstrator onto an aircraft elevator aboard the aircraft carrier USS George H.W. Bush at an unspecified location in the Atlantic Ocean, on May 14.

Northrop Grumman test pilots Bruce McFadden, left, and Dave Lorenz are pictured with their arm-mounted controllers after they successfully launched an X-47B pilot-less drone combat aircraft for the first time off an aircraft carrier in the Atlantic Ocean off the coast of Virginia, on May 14.

An X-47B drone is launched for the first time off an aircraft carrier, on May 14.

An X-47B Unmanned Combat Air System (UCAS) demonstrator is launched from the deck of the aircraft carrier USS George H.W. Bush during flight operations in the Atlantic Ocean on May 14.

An X-47B performs a fly-by after being launched for the first time off an aircraft carrier in the Atlantic Ocean off the coast of Virginia, on May 14.

A Navy X-47B drone does a fly-by over the nuclear powered aircraft carrier USS George H. W. Bush after it was launched off the coast of Virginia, on May 14. The plane isn't intended for operational use, but it will be used to help develop other unmanned, carrier-based aircraft.

An X-47B is lifted on an aircraft elevator aboard the aircraft carrier 'USS George H.W. Bush' at an unspecified location in the Atlantic Ocean, on May 14.

Guy Davies uses a stick to hit the leaves on a grapefruit tree hoping to dislodge into the container the insect Asian citrus psyllid on May 13.

Prince Harry of Great Britain, wearing his British Army uniform in his role as Captain Harry Wales, visits Section 60 of Arlington National Cemetery, where veterans of the wars in Iraq and Afghanistan are buried, on May 10, 2013 in Arlington Va. During his visit to the US, Prince Harry will be undertaking engagements on behalf of charities with which he is closely associated, on behalf also of HM Government, with a central theme of supporting injured service personnel from the UK and US forces.

Prince Harry shakes hands with a wounded soldier during his visit to the Military Advanced Training Center at Walter Reed National Military Medical Center treating wounded soldiers undergoing physical therapy on May 10, 2013 in Bethesda, Md.

The spire for the top of One World Trade Center is hoisted into place at the top of the building in New York City, on May 10, 2013. The spire has been put in place on One World Trade Center bringing the iconic structure to its full, symbolic height of 1776 feet.

WTC worker Tyler Brown taking in the view after the spire has been installed at the top of One World Trade Center.

The final piece of spire is hoisted in place on top of One World Trade Center, on May 10, 2013 in New York. The addition of the spire, and its raising of the building's height to 1,776 feet, would make One World Trade Center the tallest structure in the U.S. and third-tallest in the world.

Iron workers look at names signed inside of the final piece of the spire on top of the One World Trade Center in New York on May 10, 2013. Workers cheered and whistled as they completed the spire on New York's One World Trade Center on Friday, raising the building to its full height of 1,776 feet and helping fill a void in the skyline left by the September 11, 2001 attacks.

An iron worker takes a photograph of a crane as it places the final piece of the spire on top of the One World Trade Center in New York on May 10, 2013.

The skyline of Manhattan from the top of One World Trade Center on May 10, 2013.

The spire for the top of One World Trade Center is hoisted into place at the top of the building in New York, on May 10, 2013. The State of Liberty is seen bottom right.

Bicyclists ride by an automated real-time bike counter on Market Street on May 9 in San Francisco, California. The San Francisco Municipal Transportation Agency has installed an automated real-time bike counter, also known as a bicycle barometer, on Market Street that will display daily and annual counts. According to the SFMTA, the number of cyclists on the streets of San Francisco has surged 71 percent between 2006 and 2011.

Former Marine Jack Wright, 88, marries his girlfriend of 30 years, Shirlene King, 57, in the oncology radiation department of the Veterans Administration hospital in Los Angeles on May 7, 2013. Wright decided to marry King in the hospital after undergoing cancer treatment there.

Jack Wright chats to his friend Bob Feldman before the ceremony.

Shirlene King greets the wedding guests.

Photos of the bride and groom lie on the cake table.