The truck involved was a Light Medium Tactical Vehicle.
Emergency crews continue to conduct rescue operations, searching for the remaining soldiers missing from the 3rd Battalion, 16th Field Artillery Regiment, 2nd Armored Brigade Comabt Team, 1st Cavalry Division.
Earlier on Thursday, a Thunderbird F-16 US Air Force jet crashed into a field in Colorado following a flyover over an Air Force Academy graduation event at which President Barack Obama was in attendance. The pilot ejected safely. Only an hour later, a US Navy Blue Angels jet crashed shortly after takeoff in Tennessee, killing the pilot.
Texas has been dealing with massive flooding and torrential rainfall for nearly a month. Six people died along the Brazos River over the weekend following four days of heavy rain.