A drone captured a heartbreaking moment of a young boy clinging tightly to his dog on a rooftop as deadly floodwaters swept through Texas

A mechanical growl, low and steady, cutting through the chaos.

He froze, heart pounding.

Carefully, he crawled toward the edge of the roof and peered into the gray haze. Rain blurred everything, but something large was moving through the floodwaters below — something solid.

At first, Lucas thought it might be debris. Maybe a piece of a building torn loose by the storm.

Then voices broke through the noise.