attack the independence day parade and fireworks in cleveland thwarted by the fbi. demetrius pitts is facing one count of attempting to provide material support to al qaeda. he allegedly told an undercover agent that he wanted to help scope a cleveland location for a holiday attack. security is stepped up across the country for the fourth. and dramatic new details after a cruise ship employee vanished overboard. a 33-year-old crew member from a norwegian cruise ship went missing saturday. on sunday, a crew member on a carnival ship spotted him in the water, 20 miles north of cuba. the captain turning the boat around and sending a rescue team. the unidentified man, who survived nearly 24 hours at sea, is being treated at a mexico hospital. and when we come back, the king has a new court. his big hollywood entrance, and what it could mean for la la land. stay with us. you re turning onto the street when you barely clip a passing car. minor accident - no big deal, right?
losing her legs while on a family vacation. here s abc s erielle reshef. reporter: tonight, officials in the bahamas investigating what caused e enneur boat to explode, leaving behind this torched heap of metal. this, as we learn more about the american mother killed onboard. 39-year-old maleka jackson and her husband celebrating their 15th wedding anniversary when that boat suddenly ignited. my heart broke. my prayer was that, lord, i just pray she didn t suffer. reporter: ten americans and two bahamian crew members were onboard. at least nine seriously injured. some airlifted to florida for treatment. stephanie schaffer, a 22-year-old dancer from vermont, losing both legs, now in a medically induced coma. her mother with several broken bones. doctor, doctor! reporter: cell phone video from a nearby boat capturing the panic, as passengers desperately tried to escape the inferno. these men jumping into the water, climbing aboard that burning vessel in a frantic rush
to help. tom, the company that operates that boat tells abc news it won t comment, as the investigation is ongoing. tom? erielle reshef for us. erielle, thank you. we re also tracking tonight the extreme heat wave gripping most of the country. heat alerts for 60 million americans. temperatures feeling like they re in the triple digits from north carolina all the way to maine. at least one death blamed on the dangerous heat. here s abc s gio benitez. reporter: tonight, that dangerous heat wave with no relief in sight. in washington, d.c. today, it felt like 108 degrees. baltimore? 111. at least one death already blamed on the heat. mt. sinai hospital in new york city preparing for more heat-related illness. so, what should people watch out for? so, i mean, you should watch out for symptoms of excessive sweating, lightheadedness, dizziness. reporter: firefighters in pennsylvania warning parents to avoid hot playgrounds. we re at about 140 degrees on the asphalt. reporter: t