 These days, their ambulances carry old-fashioned supplies associated with a new method of treating heat-related emergencies. Firefighter Stephen Bishop is a firefighter in Glen Burnie with the tools they're using on a job like on a day like today. 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.