The Week in Pictures: Aug. 12 - 19

Usain Bolt of Jamaica smiles as he looks over at Andre De Grasse of Canada during a 100-meter semifinal heat at the 2016 Rio Olympics on Aug. 14. With three Olympic gold medals in both the 100m and 200m, Bolt became the third athlete in Olympic history to win two individual events at three Olympics, joining Michael Phelps and Ray Ewry.

PHOTOS: Highlights from Day 13 of the Olympics

A railway bridge collapsed causing a cargo train to fall into the river Tolten in southern Chile on Aug. 18. The train was carrying caustic soda, oil and chlorate. No were injuries were reported.

Members of an honor guard stand at attention in the rain at the graveside service for Eastman police officer Timothy Smith on Aug. 18 in Eastman, Georgia. Officials said that Smith, 30, was responding to a call of a suspicious person with a gun when he was shot on Aug. 1. Authorities later apprehended 24-year-old Royheem Deeds and charged him with murder.

Elsie Lazarus is overcome with emotion as she sits in her flooded living room while retrieving what she can from her home on Aug. 18 in St Amant, Louisiana. Devastating floods in Louisiana have killed at least 13 people and displaced tens of thousands.

PHOTOS: Louisiana Residents Assess Flood Damage

Travis Guedry and his dog Ziggy glide through floodwaters keeping an eye out for people in need on Aug. 17 in Sorrento, Louisiana.

A spider's web moistened by morning mist glitters in the light of the rising sun near Lebus, Germany, on Aug. 19.

A house burns on a hill near Cajon Junction, California, on Aug. 16. The so-called Blue Cut Fire started near a freeway exit ramp in San Bernardino County Tuesday and exploded in size, swelling to 37,002 acres -- or 57 square miles -- by Friday.

PHOTOS: Crews Fight to Contain California's Blue Cut Wildfire

Omran, a four-year-old Syrian boy covered in dust and blood, sits in an ambulance after being rescued from the rubble of a building hit by an air strike in the rebel-held Qaterji neighborhood of the northern Syrian city of Aleppo late on Aug. 17. The image of the stunned and weary-looking boy encapsulates the horrors inflicted on the war-ravaged northern city and is being widely shared on social media.

Filipino rescue workers transport a survivor after a concrete wall collapsed on top of houses in Manila on Aug. 13. According to initial reports, the wall collapsed due to heavy rains, killing two and injuring eight.

A woman waits for the bus as police secure Sherman Park after a 6:00 p.m. curfew was enacted following a second night of clashes between protesters and police on Aug. 15 in Milwaukee.

Hundreds of angry people confronted police after an officer shot and killed a fleeing man. Police said Sylville Smith, a 23-year-old black man, was armed with a loaded handgun and was fleeing a traffic stop on foot when he was killed by a police officer.

Brazil's Agatha Bednarczuk and Barbara Seixas De Freitas, front right, celebrate after winning the women's beach volleyball semifinal match against Kerri Walsh Jennings and April Ross, left, of the U.S. on Aug. 16. The defeat marked Walsh Jennings' first loss of her Olympic career.

Two hippos reach for water sprayed in their enclosure during a summer day at the Los Angeles Zoo on Aug. 13.

The Week in Pictures: Aug. 5 - 12