What word, famous from a long-running American TV dance show, names a platform for an orchestra?

American Lisa Halaby met which king while working for an airline and became his fourth wife in 1978? Mezzo-soprano Marilyn Horne did the singing for which actress in the 1954 film "Carmen Jones"? The United States launched a 1983 invasion of which Caribbean island? Which American twin brothers, born May 10, 1957, won Olympic gold and silver in slalom in 1984? Which American pilot evaded capture on the ground behind enemy lines in Bosnia for six days in 1995? Which Beat poet wrote "Howl"? "American Prometheus" is a biography of which physicist, who died in 1967? American Turf Monthly has covered which sport since 1946?