Who is Corporal Jamie Smith from Black Hawk Down: A Story of Modern War and what is their importance?

Jamie Smith was with the group of Rangers who moved to the first crash site in the fading light of the evening on October 3. Smith was shot in the upper leg during the move to the crash site, a wound that severed his femoral artery. Medics attempted to find the severed artery and clamp it to slow the bleeding, but the end of the artery had retreated into Smith's abdomen. The medic applied pressure both to the leg and the abdomen to attempt to stop the bleeding. Multiple requests were made throughout the night to have a helicopter pick Smith up and get him the medical help he desperately needed, but all these requests were denied for fear of causing another helicopter to be shot down. Smith would bled to death before rescue could reach the men.