Not to totally dash hopes, but this statement is not entirely true. What potassium iodide does is fill your thyroid up with harmless iodine, thus preventing the absorption of radioiodine. KI must be taken before or directly after insertion of radioiodine in the atmosphere. Funny thing is, America is one of the few developed countries NOT stockpiling KI in the event of an emergency.
FYI
MUST HAVE COFFEE!!!!!!!