Tactics reminiscent of the early American frontier days are now being used in Vietnam. Lieutenant Commander Donald D. Sheppard, UBN, of Coronado, California, aims a flaming arrow at a bamboo hut concealing a fortified Viet Cong bunker on the banks of the Bassac River, Vietnam on December 8, 1967. (Photo by AP Photo)

In this 2017 photo provided by Simon Pierce, Jonathan Green checks on a fin-mounted satellite tag on a whale shark in the Galapagos Islands area of Ecuador. Despite typically being bigger than a double-decker bus, the elusive whale shark has only tiny, almost useless teeth. It's also one of the least understood animals in the ocean. (Photo by Simonjpierce.com via AP Photo)

Durga Kami, 68, who is studying tenth grade at Shree Kala Bhairab Higher Secondary School, walks with his classmate Sagar Thapa, 14, as they head to school in Syangja, Nepal, June 5, 2016. (Photo by Navesh Chitrakar/Reuters)

An athlete pulls a 15-tonne truck during a Truck-Pull event marking the upcoming Independence Day in the Belarus capital Minsk, on July 3, 2014. The former Soviet nation celebrates its Independence Day on July 3 in memory of the end of Belarus occupation by Nazi Germany troops during the Red Army main summer offensive in 1944. (Photo by Sergei Gapon/AFP Photo)

In this photograph taken on January 19, 2012, Indonesian schoolchildren hold on to iron cables as they cross a nearly-collapsed suspension bridge at Sanghiang Tanjung village in Indonesia's Banten province to reach their school. (Photo by Kris Aria/AFP Photo)

A view of sunken tank which promotes scuba diving tourism with its location at an artificial reef of Guvercin Island region of Kas district of Antalya, Turkiye on December 04, 2022. The sunken tank, situated at a depth of around 15 meters, is visible to both seasoned divers and those undergoing basic diving training. (Photo by Mahmut Serdar Alakus/Anadolu Agency via Getty Images)

Palestinian protesters take cover amid clashes with Israeli security forces during a raid in the old city of Nablus, in the occupied West Bank, on May 9, 2023. The Israeli army said its troops had entered Nablus in the northern West Bank, with residents telling AFP they heard explosions during the raid. The Palestinian Red Crescent Society said its medics treated 145 injuries in Nablus, the majority from tear gas inhalation while a dozen people were shot with live fire. (Photo by Jaafar Ashtiyeh/AFP Photo)

A worker stands next to a Southern Two-toed Sloth at the Sloth and Friends Studio inside Hong Kong Ocean Park on August 3, 2023 in Hong Kong, China. (Photo by Vernon Yuen/Rex Features/Shutterstock)