CREATE TABLE table_21432 ("Episode Number" FLOAT, "Air Date" TEXT, "Event 1" TEXT, "Event 2" TEXT, "Event 3" TEXT, "Event 4" TEXT)

When event 4 was Whiplash, what was event 2?
SELECT "Event 2" FROM table_21432 WHERE "Event 4" = 'Whiplash'
SELECT "Event 2" FROM "table_21432" WHERE "Event 4" = 'Whiplash'