 It's just the same as like an insulated cooler. If you put some ice packs under your arms or within your groin or around your neck, and then you put that thermal blanket over yourself, it actually insulates that cool inside and keeps the area cooler. And according to the Maryland Department of Health, there have been four heat-related deaths so far this year. Meantime, Baltimore City held its first of four Splashfest pool parties at Druid Hill Park yesterday. 11 News reporter Tori Yorkey has more.