explosives onto an El Al flight from London to Tel Aviv. An alleged state of war lasting 335 years between the Netherlands and the Isles of Scilly declared peace bringing an end to any hypothetical war that may have been legally considered to exist. April 18 – Titan 34D-9 explodes just after launch while carrying the final KH-9 satellite. April 21 – Lorimar-Telepictures launches as a mass media company. April 26 – Chernobyl disaster: A mishandled safety test at the Chernobyl Nuclear Power Plant in Pripyat, Ukrainian SSR, Soviet Union "killed at least 4,056 people and damaged almost $7 billion of property". Radioactive fallout from the accident is concentrated near Belarus, Ukraine and Russia and at least 350,000 people are forcibly resettled away from these areas. After the accident, "traces of radioactive deposits unique to Chernobyl were in nearly every country in the northern hemisphere". April 29 – The Diamond Jubilee of Hirohito is held at the Kokugikan in Tokyo. May May 2 – Expo 86, the 1986 World Exposition on Transportation and Communication, a World's fair, opens in Vancouver, British Columbia, Canada. May 8 – Óscar Arias is inaugurated into his first term as President of Costa Rica. May 12 – NBC unveils its current peacock logo at the finale of its 60th anniversary special. May 16 The Seville Statement on Violence is adopted by an international meeting of scientists, convened by the Spanish National Commission for UNESCO, in Seville, Spain. Paramount Pictures releases Top Gun. May 23 – Somali President Siad Barre is injured in a car accident in Mogadishu and taken to Saudi Arabia for treatment. Somali opposition groups see this as an opportunity to try to remove Barre, beginning the Somali Civil War. May 25 Hands Across America: At least 5,000,000 people form a human chain from New York City to Long Beach, California, to raise money to fight hunger and homelessness. The Bangladeshi double-decked ferry Shamia capsizes in the Meghna River, southern Barisal, Bangladesh, killing at least 600. June June – Construction of the Oosterscheldekering, the world's largest openable storm surge flood barrier, is completed in the Netherlands. June 4 – Jonathan Pollard pleads guilty to espionage for selling top secret United States military intelligence to Israel. June 8 – Former United Nations Secretary-General Kurt Waldheim is elected president of Austria. June 9 – The Rogers Commission releases its report on the Space Shuttle Challenger