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The moon rises as people sit on rides at the State Fair Meadowlands, in East Rutherford, N.J.

AP Photo/Julio Cortez

The moon rises as people sit on rides at the State Fair Meadowlands, in East Rutherford, N.J.

Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts early Wednesday, north of Barstow, California July 1, 2015. Picture taken using long exposure

Gene Blevins/Reuters

Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts early Wednesday, north of Barstow, California

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London...Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London, June 29, 2015

Toby Melville/Reuters

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London on Monday

A man walks past street art in ...TOPSHOTS A man walks past street art in New York on June 23, 2015. AFP PHOTO/JEWEL SAMADJEWEL SAMAD/AFP/Getty Images

Jewel Samad/AFP/Getty

A man walks past street art in New York

A combine makes a turn while harvesting in a wheat field near Mt. Hope, Kansas, USA.

Orlin Wagner/AP

A combine makes a turn while harvesting in a wheat field near Mt. Hope, Kansas, USA>

People join hands against the backdrop of an American flag as thousands of marchers meet in the middle of Charleston's main bridge in a show of unity after nine black church parishioners were gunned down during a Bible study, Sunday, June 21, 2015, in Charleston, S.C. (AP Photo/David Goldman)

David Goldman/AP

People join hands against the backdrop of an American flag as thousands of marchers meet in the middle of Charleston’s main bridge in a show of unity after nine black church parishioners were gunned down during a Bible study 

A zombie promoting "The Walking Dead" game walks amongst gamers at the opening day of the Electronic Entertainment Expo, known as E3 at the Convention Center in Los Angeles, California on June 16, 2015. Console kings Microsoft and Sony battled for players' hearts with blockbuster games and the lure of virtual worlds as the annual Electronic Entertainment Expo began in Los Angeles

Mark Ralston/AFP

A zombie promoting “The Walking Dead” game walks amongst gamers at the opening day of the Electronic Entertainment Expo, known as E3 at the Convention Center in Los Angeles, California

Protesters clash with police in Philadelphia on Thursday, April 30, 2015. The event in Philadelphia follows days of unrest in Baltimore amid Freddie Gray's police-custody death. (AP Photo/Matt Rourke)

Matt Rourke/AP

Protesters clash with police in Philadelphia on Thursday. The event in Philadelphia follows days of unrest in Baltimore amid Freddie Gray’s police-custody death.

Protesters demonstrate ahead of a 10 p.m. curfew Wednesday, April 29, 2015, in Baltimore. The curfew was imposed after unrest in Baltimore over the death of Freddie Gray while in police custody. (AP Photo/Matt Rourke)

Matt Rourke/AP

Protesters demonstrate ahead of a 10pm curfew in Baltimore, Maryland. The curfew was imposed after unrest in Baltimore over the death of Freddie Gray while in police custody 

***BESTPIX*** National Guard Activated To Calm Tensions In Baltimore In Wake Of Riots After Death Of Freddie Gray...BALTIMORE, MD - APRIL 28:  A protester walks through tear gas as police enforce a mandatory, city-wide curfew of 10PM near the CVS pharmacy that was set on fire yesterday during rioting after the funeral of Freddie Gray, on April 28, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Houses housing project on Baltimore's west side. According to his attorney, Gray died a week later in the hospital from a severe spinal cord injury he received while in police custody.  (Photo by Andrew Burton/Getty Images) ***BESTPIX***

Andrew Burton/Getty

A protester walks through tear gas as police enforced a mandatory, city-wide curfew of 10pm near the CVS pharmacy that was set on fire on Monday during rioting after the funeral of Freddie Gray in Baltimore, Maryland

Demonstrators Gather Outside Baltimore Police Station to Protest Death of Freddie Gray...epa04723487 A young girl peers into a destroyed Baltimore City Police car along North Avenue near a CVS that was on fire during a protest for the death of Freddie Gray in Baltimore, Maryland, USA, 27 April 2015. Gray died of spinal cord injuries on 19 April while in police custody; the US Justice Department announced that they are launching their own investigation into the case.  EPA/NOAH SCIALOM

Noah Scialom/EPA

A young girl peers into a destroyed Baltimore City Police car along North Avenue near a CVS that was on fire during a protest for the death of Freddie Gray in Baltimore, Maryland

Protesters Hold Vigil And March Over Death Of Freddie Gray After Police Arrest...BALTIMORE, MD - ARPIL 21:  Protestors walk toward Baltimore Police Department's Western District police station during a march and vigil over the death of Freddie Gray, April 21, 2015 in Baltimore, Maryland.  Gray, 25, died from spinal injuries on April 19, one week after being taken into police custody. (Photo by Drew Angerer/Getty Images)

Drew Angerer/Getty

Protestors walk towards Baltimore Police Department’s Western District police station during a march and vigil over the death of Freddie Gray in Baltimore, Maryland 

TOPSHOTS Lightning brightens the night s...TOPSHOTS Lightning brightens the night sky over Washington, DC, during a rainstorm on April 20, 2015.  AFP PHOTO / MLADEN ANTONOVMLADEN ANTONOV/AFP/Getty Images

Mladen Antonov/AFP/Getty

Lightning brightens the night sky over Washington D.C. during a rainstorm

rthur Prioleau...Rev. Dr. Arthur Prioleau holds a sign during a protest in the shooting death of Walter Scott at city hall in North Charleston, S.C., Wednesday, April 8, 2015.  Scott was killed by a North Charleston police office after a traffic stop on Saturday. The officer, Michael Thomas Slager,  has been charged with murder. (AP Photo/Chuck Burton)

Chuck Burton/AP

Rev. Dr. Arthur Prioleau holds a sign during a protest in the shooting death of Walter Scott at city hall in North Charleston, South Carolina. Scott was killed by a North Charleston police office after a traffic stop on Saturday. The officer, Michael Thomas Slager, has been charged with murder 

U.S. President Barack Obama delivers remarks during an Easter Prayer Breakfast in the East Room of the White House  April 7, 2015 in Washington, DC. According to the White House, Obama hosted the event to bring Christian religious leaders together at the White House to 'pray and reflect on Holy Week and Easter.

Chip Somodevilla/Getty

U.S. President Barack Obama delivers remarks during an Easter prayer breakfast in the East Room of the White House. According to the White House, Obama hosted the event to bring Christian religious leaders together at the White House to ‘pray and reflect on Holy Week and Easter 

An ice covered statue is seen in Lafayette Square March 2, 2015 in Washington, DC.

Brendan Smialowski/AFP

An ice covered statue is seen in Lafayette Square on Monday in Washington, DC

Alan Gross is greeted with hugs after arriving at Joint Base Andrews, Maryland in this White House handout photo...Alan Gross is greeted with hugs after arriving at Joint Base Andrews, Maryland in this December 17, 2014 White House handout photo. The United States and Cuba agreed on Wednesday to restore diplomatic ties that Washington severed more than 50 years ago, and President Barack Obama called for an end to the long economic embargo against its old Cold War enemy.  Gross spent 5 years as a prisoner in Cuba. REUTERS/Lawrence Jackson/White House/Handout via Reuters  (UNITED STATES - Tags: POLITICS) THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS

Lawrence Jackson/White House/Reuters

Alan Gross, an American imprisoned in Cuba for five years, arrives at Joint Base Andrews, Maryland. The US and Cuba agreed on Wednesday to restore diplomatic ties that Washington severed more than 50 years ago, and President Barack Obama called for an end to the long economic embargo against its old enemy. 

Dr. Joe Wallace, right, uses a pressure washer to cut years of algae growth off the Eye Spy statues at Silver Springs State Park in Ocala, Florida.

Alan Youngblood/The Ocala Star-Banner/AP

Dr. Joe Wallace, right, uses a pressure washer to cut years of algae growth off the Eye Spy statues at Silver Springs State Park in Ocala, Florida.

Virginia residents wait in line in the pre-dawn hours to vote in the 2014 US midterm elections at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia, USA, 04 November 2014. Virginia voters are choosing between Democrat Mark Warner and Republican Ed Gillespie for the US Senate. US voters are increasingly disillusioned with Washington as they head to the polls 04 November to elect senators and members of the House of Representatives.

Jim Lo Scalo/EPA

Residents wait in line in the pre-dawn hours to vote in the 2014 US midterm elections at a historic property called the Hunter House at Nottoway Park in Vienna, Virginia

 Iowa Senate Candidate Bruce Braley Campaigns Ahead Of Midterm Elections

Chip Somodevilla/Getty Images

Democratic US Senate candidate Bruce Braley (L) hugs volunteer Pat Halferty during a campaign stop at the Lynn Count Democratic HQ on November 3 in Cedar Rapids, Iowa. Polls put Braley neck-and-neck with Republican Joni Ernst and the Iowa result could decide which party controls the Senate