1902

Willis Carrier produced a set of designs for what would become the world’s first modern air-conditioning system.

1944

During World War II, 320 men, two-thirds of them African-Americans, were killed when a pair of ammunition ships exploded at the Port Chicago Naval Magazine in California.

1945

Following Nazi Germany’s surrender, President Harry S. Truman, Soviet leader Josef Stalin and British Prime Minister Winston S. Churchill began meeting at Potsdam in the final Allied summit of World War II.

1955

Disneyland opened in Anaheim after its $17 million, yearlong construction; the park drew a million visitors in its first 10 weeks.

2014

All 298 passengers and crew aboard Malaysia Airlines Flight 17 were killed when the Boeing 777 was shot down over rebel-held eastern Ukraine; both Ukraine’s government and pro-Russian separatists denied responsibility.

Birthdays

Queen Camilla of the United Kingdom is 78. Rock musician Terry “Geezer” Butler is 76. Actor Lucie Arnaz is 74. Actor David Hasselhoff is 73. Former German Chancellor Angela Merkel is 71. Film director Wong Kar-wai is 67. Television producer Mark Burnett is 65. Singer Regina Belle is 62. Country singer Luke Bryan is 49. Actor Billie Lourd is 33.