Heathrow Airport has resumed operations following a significant disruption caused by a fire at a nearby substation that led to a shutdown and extensive delays for travelers. The incident has drawn attention to vulnerabilities in the UK’s infrastructure, prompting calls for investigations into the power outage and crisis management. Thousands of passengers were stranded, with some flights being turned back mid-journey. The incident has sparked debate over the competence of airport management and raised concerns about national security, with authorities investigating possible sabotage. As travel resumes, airlines are issuing waivers due to the ongoing delays, and passengers are being advised about their rights amid the chaos.