As an Army surgeon in the Middle East, Dr. Keith Rose watched a colleague bleed to death when a truck in his convoy was hit with a rocket-propelled grenade.

Rose could not get his comrade a tourniquet, which could have helped control the bleeding on his wounded leg, and sat along the mangled wreckage and talked with him as he took his last breath

"It really kind of frustrated me," Rose said.

Once he returned to the U.S., Rose approached BlackHawk, a provider of military and law enforcement gear, with an idea to create clothes with built-in tourniquets