A wounded Iraq veteran and his wife have lost a third child from injuries the boy suffered in a car accident on the way to visit his father in the hospital.

Three weeks after his siblings died in an Oct. 13 accident on the gusty West Texas plains, 9-year-old Tyler Johnson died Saturday at Children's Medical Center Dallas.

Army Spc. John Austin Johnson was waiting for his wife, Lisa, and their three kids to visit him at Brooke Army Medical Center in San Antonio when the deadly crash occurred on Interstate 10 about 12 miles east of Ozona.

Lisa Johnson overcorrected the steering in her sport utility vehicle after encountering a blast of wind on the drive from El Paso, causing the car to roll at least four times, officials have said.

The couple's youngest children, 2-year-old Logan and 5-year-old Ashley, died at the scene. Tyler Johnson suffered massive head injuries.

Lisa Johnson was driving at the speed limit, traffic investigators have said, but they blamed the accident on a combination of high speed, drowsiness and powerful winds.

The three children were in the back seat. Logan was in a child seat, but the other two children were not wearing seatbelts.

Numerous donations have helped the family deal with immediate expenses.

The Professional Golfers' Association raised $95,000 to pay for a new car and other expenses.

American Airlines donated plane tickets for family members to travel to the children's funerals last month and the pending funeral this week.

You can donate to the family through any Bank of America branch. The account is the “Ashley and Logan Johnson Memorial Fund.” Tell the bank associate that the account is domiciled in Texas.