WATCH: David Muir speaks with Texas son still searching for parents after flooding

Along the banks of the Guadalupe River, David Muir meets with Robert Brake Jr. as he searches for his parents who were washed away by the rapidly rising floods.

​Along the banks of the Guadalupe River, David Muir meets with Robert Brake Jr. as he searches for his parents who were washed away by the rapidly rising floods.   Along the banks of the Guadalupe River, David Muir meets with Robert Brake Jr. as he searches for his parents who were washed away by the rapidly rising floods.