Tony Kushner has a knack for being ready with a play that fits the time. “Six years ago, he began writing a play about a remote Central Asian nation; by the time Homebody/Kabul opened in December 2001, the United States was fighting a war there. Now, amid the devastation of Hurricane Katrina, his 2003 musical Caroline, or Change seems even more eerily prescient. ‘There ain’t no under ground in Louisiana,’ run its newly harrowing opening lines. ‘There is only under water’.”