5564, which conferred United States citizenship on legally qualified island residents. November 6 45 people are killed in the 1986 British International Helicopters Chinook crash. Alex Ferguson is appointed as the new manager of Manchester United. November 18 Greater Manchester Police announce that they will search for the bodies of 2 missing children (who both vanished more than 20 years ago) after the Moors murderers Ian Brady and Myra Hindley confess to 2 more murders. November 21 Iran-Contra Affair: National Security Council member Oliver North and his secretary, Fawn Hall, start shredding documents implicating them in selling weapons to Iran and channeling the proceeds to help fund the Contra rebels in Nicaragua. December December 4 – The MV Amazon Venture oil tanker begins leaking oil while at the port of Savannah in the United States, resulting in an oil spill of approximately . December 7 – A magnitude 5.7 earthquake destroys most of the Bulgarian town of Strajica, killing 2 people. December 14 – Rutan Voyager, an experimental aircraft designed by Burt Rutan and piloted by Dick Rutan and Jeana Yeager, begins its flight around the world from Edwards Air Force Base in the United States. December 16 – Jeltoqsan, mass anti-government protests, break out across the Kazakh SSR, resulting in the massacre of over 165 protesters. December 19 – Soviet dissident Andrei Sakharov is permitted to return to Moscow after six years of internal exile. December 20 – Three African Americans are assaulted by a group of white teens in the Howard Beach neighborhood of Queens, New York. One of the victims, Michael Griffith, is run over and killed by a motorist while attempting to flee the attackers. December 23 – Rutan Voyager completes the first nonstop circumnavigation of the earth by air without refueling in 9 days, 3 minutes and 44 seconds. December 31 Dupont Plaza Hotel arson: A hotel fire in San Juan, Puerto Rico, kills 97 and injures 140. Soviet submarine Krasnoyarsk (K-173) is commissioned. Date unknown Average per capita income in Japan exceeds that in the United States. The first commercially available 3D printer is sold. Informal stock trading is done in Shenyang, China; the first of its kind in Communist China. Opus Pro, a Latvian hard rock group, is established. The band Sweet Children (now known as Green Day) was formed by the lead singer, Billie Joe Armstrong. The Province of Flevoland is established