new concerns about the health of pope francis. a fever forcing him to cancel events. new insight from the reporter who interviewed him face-t-to-face jusust yesterday. the u.s. coast guard joining an urgent search in the bahamas for an american teen, who went overboard while celebrating his high school graduation. the critical shortage of more than a dozen cancer drugs patients being turned away from their chemo treatments what s behind all of this and celine dion s major announcement why she s canceling her global tour. announcer: this is nbc nightly news with lester holt and good evening i m tom llamas in for lester tonight if you re sitting in front of the tv right now, you re one of the lucky ones, either because you already reached your destination, or you decided to stay home if the long lines at airports today are any sign, it seems that americans have collectively decided that this is the summer to get out and travel, and there s no better time to start