BREAKING: Tennis star Coco Gauff has donated $3.0 million to support victims and aid in the search and rescue of those missing in the devastating flash floods in Texas. Fans were stunned to learn that Coco Gauff personally traveled to the disaster site to offer hands-on help...

Flash flooding in Texas Hill Country has triggered one of the largest rescue operations in the state’s history.

NASA’s high-altitude WB-57 aircraft took off from Ellington Field Joint Reserve Base in Houston on Tuesday, and will conduct aerial surveys using its DyNAMITE (Day/Night Airborne Motion Imager for Terrestrial Environments) sensor.

Minnesota Task Force 1, a K-9 unit trained to respond to a variety of rescue situations, will assist Texas with flood recovery efforts.

NBC News’ Aaron Gilchrist reports from Kerrville, Texas, where crews go through flood debris as search and rescue efforts continue.

Houston and Texas businesses and organizations are accepting donations to help people affected by the Fourth of July floods along the Guadalupe River.