By The Associated Press

Today is Thursday, Sept. 17, the 261st day of 2020. There are 105 days left in the year.

Today’s Highlight in History:

On Sept. 17, 1787, the Constitution of the United States was completed and signed by a majority of delegates attending the Constitutional Convention in Philadelphia.

On this date:

In 1862, more than 3,600 men were killed in the Civil War Battle of Antietam in Maryland.

In 1908, Lt. Thomas E. Selfridge of the U.S. Army Signal Corps became the first person to die in the crash of a powered aircraft, the Wright Flyer, at Fort Myer, Virginia, just outside Washington, D.C.

In 1939, the Soviet Union invaded Poland during World War II, more than two weeks after Nazi Germany had launched its assault.

In 1944, during World War II, Allied paratroopers launched Operation Market Garden, landing behind German lines in the Netherlands. (After initial success, the Allies were beaten back by the Germans.)

In 1978, after meeting at Camp David, Israeli Prime Minister Menachem Begin and Egyptian President Anwar Sadat signed a framework for a peace treaty.

In 2011, a demonstration calling itself Occupy Wall Street began in New York, prompting similar protests around the U.S. and the world.

Ten years ago: A scientist and his wife who once worked at a top-secret U.S. nuclear laboratory were arrested after an FBI sting operation and charged with conspiring to help develop a nuclear weapon for Venezuela. (After pleading guilty, Pedro Leonardo Mascheroni was sentenced to five years in federal prison while his wife, Marjorie Roxby Mascheroni, received a year and a day; the U.S. government never alleged that Venezuela or anyone actually working for it had sought U.S. secrets.)

Five years ago: General Motors agreed to pay $900 million to fend off criminal prosecution over the deadly ignition-switch scandal, striking a deal that brought criticism down on the Justice Department for not bringing charges against individual employees; GM also announced it would spend $575 million to settle the majority of the civil lawsuits filed over the scandal.