This mid-decade period begins with Sally Ride becoming the first American woman in space, the introduction of the Strategic Defense Initiative (SDI) missile defense program, the 1984 Summer Olympics in Los Angeles, and President Ronald Reagan’s reelection. It continues with the first summit meeting between Reagan and Mikhail Gorbachev, Coca-Cola’s brief introduction of New Coke, and the release of the blockbuster film Back to the Future. The era was also marked by tragedy with the Space Shuttle Challenger disaster.