Mt. Whitney - No Fall Zones - Snow Bridges - Risk Mitigation - Extreme low 02 levels

Do you cross a snow bridge with water running underneath in a no-fall zone? with or without proper gear? The dreaded headache at 12,500 Feet with no acclimatization. Broken sleep, Gastrointestinal issues from altitude. How the right gear can make you feel safe even though the reality is you're untrained.