Officials in Texas have implemented major changes to improve flood warnings after last year's deadly floods in Hill Country. They passed laws for better early warning systems and infrastructure improvements. This week, slow-moving storms triggered flash floods, but only two deaths have been confirmed so far. Some agencies have been more proactive with alerts, and some new sirens have been installed. Private companies are also creating warning systems. But some residents were also left with no warning, or were only alerted to the rising water by calls from friends. Texas Gov. Greg Abbott says the changes have saved lives, as the state was better prepared for this year's floods.