Colonel Vishay Dubey became the first Indian Army officer to climb the Mount Everest without artificial oxygen. Four other climbers also scaled the peak without oxygen in the worst weather conditions in last 10 years. Seven snow Lions successfully completed the summit after spending two of the most difficult nights before the summit attempt. Army congratulated the team leader for keeping organisational aim above the personal glory. More than 4,000 people have climbed Mount Everest, but fewer than 200 have done so without oxygen. And Vishay Dubey added his names to the list of oxygen-less ascents of the world’s tallest mountain.