Who is Chief Warrant Officer Cliff 'Elvis' Wolcott from Black Hawk Down: A Story of Modern War and what is their importance?

Chief Warrant Officer Cliff Wolcott was a gentle man who rarely got ruffled even in the most tense situations, which, along with his impersonations, earned him the nickname Elvis. Wolcott was the pilot of Super Six One, the first Black Hawk helicopter to be shot down over Mogadishu on October 3. Wolcott would remain calm even as his helicopter spun out of control, teasing his co-pilot as he fought he controls. Wolcott would die upon impact from the massive crumpling of the nose of the helicopter against his body. It would take several hours to extract Wolcott's body from the downed craft, delaying the rescue of the surviving soldiers at the site.