Standard & Poor’s announced that Penn gaming, NXP Semiconductors, Caesar’s Entertainment, and Generac Holdings will be joining the S&P 500 Index. Carnival Corp’s CEO predicts the cruise industry won’t be back to normal until 2023. Airline stocks rise after TSA reports over 1.3 million people flew on Sunday. Jason Moser analyzes those stories, plus we dip into the Fool Mailbag to discuss recent volatility and the importance of the right mindset.