As tensions escalated in the Strait of Hormuz, Indian merchant sailors continued navigating some of the world's largest oil tankers through one of the most dangerous shipping routes on Earth. NDTV speaks to Indian captains who witnessed missile attacks, families who waited anxiously back home, and recounts the heartbreaking story of marine engineer Heramb Karmarkar, whose final message to his family came moments before a fatal attack. A gripping account of courage, sacrifice and the hidden human cost of global trade.