As the state mourns the deaths caused by the floods, the disaster is drawing attention to the effectiveness of the Blue Alert system.

Phones buzzed across Texas just before 8 p.m. Wednesday with a high-priority emergency alert. But it wasn't about flooding, a storm, or a missing child. It was about a five-day-old shooting at an ICE detention center hundreds of miles away.

Officials are being pressed about their response and whether there could have been a better warning system.