ABC News' Victor Oquendo reports on the urgent warning from authorities about rip currents after at least 800 people were rescued from the water over the 4th of July weekend. SUBSCRIBE to ABC News on YouTube: bit.ly/2vZb6yP Latest updates: abcnews.go.com Watch FULL EPISODES on Hulu: abcn.ws/3bzvQQn #news #riptide #beach #rescue #swimming #abcnews