 A strong finish to the week on Wall Street. The Dow gaining about 67 points today. The S&P and the Nasdaq both hitting new highs. The Nasdaq closing at 18,352. Elisa Brady, this is Fox News. A fraction of a raindrop, three grains of salt, had up to 100 times more potent than morphine. The tiniest amount of illegal fentanyl is all it takes to cause an overdose.