April 21, 1958

1958Michael Zarnock, American author^[†]

Michael Zarnock is an American writer of collector guides and articles about Hot Wheels toy cars and accessories. Zarnock is known for a massive Hot Wheels collection that earned him a Guinness World Record title in 2003 and 2007 for owning the largest collection of different model cars (8,128) and is featured in the 2008 "Ripley's Believe It or Not!" book Prepare to Be Shocked. And the 2011 "Ripley's Believe It or Not!" book "Utterly Crazy!" By his own account he has collected more than 20,000 toy cars; From 2004 to 2010 some had been on display at the Children's Museum of Utica, New York. The local Utica newspaper reported Zarnock as saying: "I’ve been in love with Hot Wheels since 1968."

1958United Air Lines Flight 736 collides with a United States Air Force fighter jet near Arden, Nevada in what is now Enterprise, Nevada.^[†]

United Air Lines Flight 736 was a scheduled transcontinental passenger service flown daily by United Airlines between Los Angeles and New York City. On April 21, 1958, the airliner assigned to the flight, a Douglas DC-7 with 47 on board, was flying over Clark County, Nevada in clear weather when it was involved in a daytime mid-air collision with a United States Air Force fighter jet crewed by two pilots. Both aircraft fell out of control from 21,000 feet (6,400 m) and crashed into unpopulated desert terrain southwest of Las Vegas, leaving no survivors. The loss of Flight 736, one of a series of 1950s mid-air collisions involving passenger aircraft in American skies, helped usher-in widespread improvements in air traffic control within the United States, and led to a sweeping reorganization of federal government aviation authorities.