The Heathrow fire forced my flight to turn back to LA after 5 hours. Here's my biggest takeaway.

BENJAMIN CREMEL/AFP via Getty Images

• Jatin Sharma's flight to London turned back to LA when a power outage closed Heathrow Airport.
• Sharma, who works in energy and infrastructure insurance, was shocked by how vulnerable the airport was.
• "A fire in one place shouldn't completely disrupt something in another place," he said.

This as-told-to essay is based on a transcribed...