"I have no problem sacrificing myself for someone else. It's my job." So says a member of the elite Combat Rescue unit of the U.S. Air Force, whose job it is to come to the aid of American or Allied forces who are either injured or are in extreme danger. "Inside Combat Rescue," the result of unprecedented access provided to National Geographic Channel, takes viewers inside the harrowing world of the brave airmen -- Pararescuemen or PJs, as they're known -- during a four-month deployment to Kandahar, Afghanistan. More than two dozen missions are chronicled in the series, using strategically placed cameras on airmen's helmets and more than 40 cameras mounted both inside and outside of the Air Force's Pave Hawk helicopters. PJs and their rescue teammates race against time to save Americans, coalition forces, Afghan allies and even local Afghan families caught in the crossfire within the "golden hour," the critical first hour that's often the difference between life and death.