As families and search crews sift through debris, mangled trees and toppled vehicles in Kerr County after the catastrophic Fourth of July flooding, authorities are facing growing questions about whether enough warnings were issued.

As questions swirl surrounding the timeline of who was notified about the flooding when, and if more could have been done, Department of Homeland Security Secretary Kristi Noem said an alert from the National Weather Service was sent to people in the flood zone -- but she said that doesn’t mean that people heard it.