The risk of the catastrophic flooding that struck Texas Hill Country as people slept on July 4 and left at least 120 dead was potentially underestimated by federal authorities, according to an ABC News analysis of Federal Emergency Management Agency data, satellite imagery and risk modeling.

Key questions remain unanswered about the actions Texas officials took both before and during the catastrophic July Fourth holiday floods as a painstaking search for victims continues along the Guadal...

By the time I watched the video, I’d seen the images of upturned bunk beds, muddied stuffed animals, tiny T-shirts snagged on branches.