CDR NA Mohan had an illustrious career in the Indian Navy, serving in various roles including aide-de-camp to the President of India, welcoming foreign leaders like Mikhail Gorbachev, accompanying the president on state visits to Tanzania, and serving as an operations officer specialized in ship navigation and fighter control. Some highlights included reviewing the fleet with the president, bringing lions to the presidential convoy on an African safari, and serving as a liaison officer making three visits to the late PLO Chairman and as a guard officer accompanying the president onboard an aircraft carrier in Mumbai.