Some of London's telephone operators and engineers, trying out their gas masks at the anti-gas civilian training centre in Gloucester, where they were taught how to deal with gas attacks. (Photo by Harry Todd/Fox Photos/Getty Images). 13th February 1937

A member of the Eton public school O.T.C. (Officers Training Corps) practising shouting out orders during a training session, 20th January 1940. (Photo by Hulton Archive/Getty Images)

A broken picture frame is left in the tsunami-hit Arahama area, three months and two days after the magnitude 9.0 earthquake and subsequent tsunami on June 13, 2011 in Sendai, Miyagi, Japan. Japanese government has been struggling to deal with the earthquake and tsunami as well as the troubled Fukushima Daiichi Nuclear Power Plant. The fear on outbreak of virus infectious disease are mounting due to the humid rainy season on the corner and delay of the clearing the debris. (Photo by Kiyoshi Ota/Getty Images)

Finia, a visiting student from Hanover, cools off under a water sprinkler in front of the Chancellery on June 10, 2010 in Berlin, Germany. (Photo by Sean Gallup/Getty Images)

“Sepak takraw or kick volleyball, is a sport native to the Malay-Thai Peninsula. Sepak takraw differs from the similar sport of volleyball in its use of a rattan ball and only allowing players to use their feet, knee, chest and head to touch the ball. It is a popular sport in Indonesia, Malaysia, Thailand, Singapore, Myanmar, Vietnam, Cambodia, Laos, and Philippines”. – Wikipedia

Photo: Hyun Ju Kim of Korea kicks over the net against Yukie Sato of Japan during the round robin match between Korea and Japan during day one of the ISTAF Sepaktakraw World Cup at Titiwangsa Stadium on July 21, 2011 in Kuala Lumpur, Malaysia. (Photo by Ryan Pierse/Getty Images for UFA Sports)

This Wednesday, August 31, 2016 photo, provided by the Syrian anti-government activist group Aleppo Media Center (AMC), shows Syrian boys dive into a hole filled with water that was caused by a missile attack in the rebel-held neighborhood of Sheikh Saeed in Aleppo province, Syria. (Photo by Aleppo Media Center via AP Photo)

An injured woman is pictured near the Blue Parrot nightclub in Playa del Carmen, Quintana Ro state, Mexico where 5 people were killed, three of them foreigners, during a music festival on January 16, 2017. A shooting erupted at an electronic music festival in the Mexican resort of Playa del Carmen early Monday, leaving at least five people dead and sparking a stampede, the mayor said. Fifteen people were injured, some in the stampede, after at least one shooter opened fire before dawn at the Blue Parrot nightclub during the BPM festival. (Photo by Victor Vargas/AFP Photo)

Girls bath inside a drum on a hot summer day at a field in New Delhi, April 18, 2017. (Photo by Adnan Abidi/Reuters)