Number 10. BELL H-13 SIOUX was a two-bladed, single engine, light helicopter built by Bell Helicopter. Westland Aircraft manufactured the Sioux under license for the British military as the Sioux AH.1 and HT. In 1947, the United States Air Force ordered the improved Bell Model 47A. Most were designated YR-13 and three winterized versions were designated YR-13A. The United States Army first ordered Bell 47s in 1948 under the designation H-13. These would later receive the name Sioux. The Bell-built H-13 B is seen airborne in this April 29, 1951 photo. The helicopter is equipped with a 173 horsepower engine, cruises at 85 miles per hour, climbs 900 feet in a minute and has a service ceiling of 11,500 feet. (Photo by AP Photo)

Students stand on the roof of a wooden boat as haze blankets the Musi River while they travel to school in Palembang, on Indonesia's Sumatra island, September 10, 2015. Indonesia is investigating 10 firms over worsening forest fires that have created a blanket of smog over Southeast Asia, threatening them with sanctions if they are found responsible, a government minister said on Tuesday. The thick haze from Indonesia's Sumatra and Kalimantan islands has forced the repeated cancellation of flights in the area and pushed air quality to unhealthy levels in neighbouring Singapore and Malaysia. (Photo by Reuters/Beawiharta)

Sukhoi Su-30SM jet fighters of the Russkiye Vityazi (Russian Knights) aerobatic team perform during a demonstration flight in Krasnoyarsk, Russia October 6, 2018. (Photo by Ilya Naymushin/Reuters)

A model poses beside a Renault DeZir concept car during the media day of the Shanghai International Automobile Industry Exhibition at Shanghai New International Expo Center on April 20, 2011 in Shanghai, China. The 14th Shanghai International Automobile Industry Exhibition (Auto Shanghai 2011) will be held from April 21 to 28 with the theme of “Innovation For Tomorrow”. About 2,000 carmakers and parts providers from 20 countries are due to showcase 1,100 car models, 75 of which makes their world premieres in the auto show. (Photo by Feng Li/Getty Images)

A North Korean soldier looks through a window at Australian Prime Minister Julia Gillard (L) and her partner Tim Mathieson (C) while they visit the United Nations Command Military Armistice Commission (UNCMAC) meeting room at the border village of Panmunjom, between South and North Korea, on April 24, 2011 South Korea. Gillard will visit Japan, the Republic of Korea and China during a bilateral tour of North Asia from April 20-27. (Photo by Jeon Heon-Kyun-pool/Getty Images)

“The Red Beach is located in the Liaohe River Delta, about 30 kilometer southwest of Panjin City in China. The beach gets its name from its appearance, which is caused by a type of sea weed that flourishes in the saline-alkali soil...”. – Amusing Planet. Photo: Panjin Red Beach (盘锦红海滩). (Photo by 猪倌)

This photo taken on April 5, 2013 shows Buddhist monks passing a yak in Seda Monastery, the largest Tibetan Buddhist school in the world, with up to 40,000 monks and nuns in residence for some parts of the year. Seda, known to Tibetans as Serthar is located in Ganzi prefecture in the west of China's Sichuan province and has become a hotbed of protests and violence since the Tibetan uprisings of March 2008. (Photo by Peter Parks/AFP Photo)

“In honor of Friday’s World Press Freedom Day, the non-governmental organization Reporters sans frontières (Reporters Without Borders) launched a campaign depicting world-famous dictators giving everyone the finger, or the international equivalent thereof”. – Kay Steiger. (Photo by Vincent Bousserez/Reporters Without Borders)