 Advocates say these vessels can be dangerous to boaters, especially when it's high tide and the barges are hidden underwater. I'm Stephanie DeLuca. Continuing updates from around the state on the South Carolina Radio Network. I'm Kareem Abdul-Jabbar. I learned about atrial fibrillation the hard way. My symptoms would come and go. Shortness of breath, fatigue. I kept going. Then I got so lightheaded, I couldn't. My doctor said I have AFib, so I'm about five times more likely to have a stroke.