According to this recap of an interview of Dr Sanjay Gupta on the Dr Oz Show, there was an incident while he was acting as a journalist in a war zone in Iraq:
While in Iraq, he encountered a soldier with a critical head wound. He switched roles from reporter to surgeon to offer his expertise, but the field was not prepared for such intensive surgery.
He improvised, using a Black and Decker drill bit to perform brain surgery on a soldier, who was then airlifted out of the danger zone for further treatment.
Given that it is a Dr. Oz show, which makes me incredibly skeptical of anything he says, is there anything to substantiate this?