united states

Train personel survey the NJ Transit train that crashed in to the platform at the Hoboken Terminal September 29, 2016 in Hoboken, New Jersey. (Photo by Pancho Bernasconi/Getty Images)

Pancho Bernasconi/Getty Images

Train personnel survey the NJ Transit train that crashed in to the platform at the Hoboken Terminal, New Jersey Credit: Pancho Bernasconi/Getty Images

Republican presidential nominee Donald Trump (L) and Democratic presidential nominee Hillary Clinton greet each other before the first US Presidential Debate at Hofstra University September 26, 2016 in Hempstead, New York

Brendan Smialowski/AFP/Getty Images

Republican presidential nominee Donald Trump (L) and Democratic presidential nominee Hillary Clinton greet each other before the first US Presidential Debate at Hofstra University in Hempstead, New York

Police officers wearing riot gear block a road during protests after police fatally shot Keith Lamont Scott in the parking lot of an apartment complex in Charlotte, North Carolina

Adam Rhew/Reuters

Police officers wearing riot gear block a road during protests after police fatally shot Keith Lamont Scott in the parking lot of an apartment complex in Charlotte, North Carolina

Miss Tennessee Outstanding Teen Leah Humble, 16, greets admirers outside Boardwalk Hall, the venue for the 96th Miss America Pageant that took place in Atlantic City, New Jersey

Mark Makela/Reuters

Miss Tennessee Outstanding Teen Leah Humble, 16, greets admirers outside Boardwalk Hall, the venue for the 96th Miss America Pageant, Atlantic City, New Jersey

A Yemeni walks past graffiti protesting US drone operations in Yemen, few hours after a US drone attack on suspected al-Qaeda militants

Yahya Arhab/EPA

A Yemeni walks past graffiti protesting US drone operations in Yemen, few hours after a US drone attack on suspected al-Qaeda militants

Toui Bounmy Sidavong, 43, holds a bomb dropped by the U.S. Air Force planes during the Vietnam War, in the village of Ban Napia in Xieng Khouang province

Jorge Silva/Reuters

Toui Bounmy Sidavong, 43, holds a bomb dropped by the U.S. Air Force planes during the Vietnam War, in the village of Ban Napia in Xieng Khouang province, Laos

A truck is seen in a flooded parking lot on August 15, 2016 in Denham Springs, Louisiana.

Brendan Smialowski/AFP/Getty

A truck is seen in a flooded parking lot in Denham Springs, Louisiana

United States' Simone Biles performs on the floor during the artistic gymnastics women's qualification at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Sunday, Aug. 7, 2016.

Rebecca Blackwell/AP Photo

United States’ Simone Biles performs on the floor during the artistic gymnastics women’s qualification at the 2016 Summer Olympics in Rio de Janeiro, Brazil

South Korea And U.S. Military Hold Live Fire Exercise

Chung Sung-Jun/Getty Images

A South Korean soldier from 26th Infantry division attends the United States and South Korean Joint live fire Exercise at Rodriguez Range on Friday in Pocheon, South Korea.

Largest Freefall Formation world record attempt in Arizona USA...epaselect epa04150210 222 skydivers from World Team attempt to break the world record for the Federation Aeronautique Internationale (FAI) Largest Sequential Freefall Formation attempt at Skydive Arizona in Eloy, Arizona, USA, 01 April, 2014.

Roy Dabner/EPA

222 skydivers from World Team attempt to break the world record for the Federation Aeronautique Internationale (FAI) Largest Sequential Freefall Formation attempt at Skydive Arizona in Eloy, Arizona, US on Monday. 

Twenty Fifth Annual North American Interational Auto Show in Detroit, Michigan...epa04018922 The new Toyota FT-1 is announced at the North American International Auto Show, at the Cobo Center in Detroit, Michigan, USA, 13 January 2014. The North American International Auto Show is one of the largest car shows held each year in the United States, and opens to the public 18 January 2014.

Larry W.Smith/EPA

Twenty Fifth Annual North American International Auto Show in Detroit. The new Toyota FT-1 is announced at the North American International Auto Show, at the Cobo Center. The North American International Auto Show is one of the largest car shows held each year in the United States, and opens to the public 18 January 2014. 

United States' Inika Mcpherson competes in a women's high jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013. (AP Photo/Martin Meissner)

Martin Meissner/AP

United States’ Inika McPherson competes in a women’s high jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia on Thursday 

A Marine closes a door to Marine One with US President Barack Obama on the South Lawn of the White House on May 28, 2013 in Washington. Obama is traveling to the New Jersey shore to survey rebuilding efforts in areas effected by last year's hurricane Sandy.     AFP PHOTO/Brendan SMIALOWSKIBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP

A Marine on Tuesday closes the door to Marine One, carrying President Barack Obama, on the south lawn of the White House, Washington. Mr Obama is travelling to the New Jersey shore to survey rebuilding efforts in areas affected by last year’s Hurricane Sandy

Michelle Obama Visits Local Washington DC School...WASHINGTON, DC - MAY 24:  U.S. first lady Michelle Obama dances with pre-kindergarten students while she visits the Savoy School May 24, 2013 in Washington, DC. The Savoy School, once one of the lowest performing schools in the District of Columbia, has shown significant signs of improvement since being designated as one of eight schools selected last year for the Turnaround Arts Initiative by the President's Committee on the Arts and the Humanities.  (Photo by Win McNamee/Getty Images)

Win McName/Getty

US First Lady Michelle Obama dances with pre-kindergarten students while she visits the Savoy School on Friday in Washington, DC. The school, once one of the lowest performing in the District of Columbia, has shown significant signs of improvement since being designated as one of eight schools selected last year for the Turnaround Arts Initiative by the President’s Committee on the Arts and the Humanities. 

Ariel Castro, Pedro Castro and Onil Castro appear in court in Cleveland,...Ariel Castro (R), Pedro Castro (C) and Onil Castro appear in court in Cleveland, Ohio, May 9, 2013. Ariel Castro, 52, a veteran school bus driver fired from his job last fall, was formally charged with kidnapping and raping the three women, who were rescued from his house on May 6 evening shortly before his arrest.  REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW TPX IMAGES OF THE DAY)

John Gress/Reuters

Ariel Castro (R), Pedro Castro (C) and Onil Castro appear in court in Cleveland, Ohio on Thursday. Ariel Castro, 52, a veteran school bus driver was fired from his job last autumn, was formally charged with kidnapping and raping the three women, who were rescued from his house on Monday. 

President Barack Obama stands with, from second from left, former Presidents George W. Bush, Bill Clinton, George H.W. Bush, and Jimmy Carter at the dedication of the George W. Bush presidential library on the campus of Southern Methodist University in Dallas, Thursday, April 25, 2013.

Charles Dharapak/AP

President Barack Obama stands with, from second from left, former Presidents George W. Bush, Bill Clinton, George H.W. Bush, and Jimmy Carter at the dedication of the George W. Bush presidential library on the campus of Southern Methodist University in Dallas on Thursday.