T.J. Hammon’s family isn’t surprised that he stopped to help someone- they are surprised that it cost him his life.

“He would do anything for anyone,” says his sister, Kohley McCargo. “I still don’t understand. That’s my brother, my little baby brother.”

Hammon, 26, died Wednesday night in a fiery accident when he stopped to help a woman with a flat tire on Loop 12 near Interstate 30 Wednesday night. The woman had called for roadside assistance.

Hammon, who owned a roadside assistance business, happened to be nearby. He parked his Ford Ranger on the shoulder of the road. He had finished changing the flat and was putting tools in the bed of his white Ford Ranger when a Chrysler 2000 ran into him. The impact severed his legs.

“They had an angel,” says his sister, Taryn McCargo. “He lost his life helping them.”

The car, driven by Lisa Conway, caught fire upon impact, according to an arrest warrant. Bystanders helped her escape. She was taken to Parkland Memorial Hospital. Conway told police that she was driving home from a club when someone hit her.

According to an arrest warrant, Conway had bloodshot eyes, smelled of alcohol and mumbled as she spoke. She did not recall what street she was driving on when the accident occurred. She told police that she could not remember anything about the crash.

Conway claimed that she hadn't had a drink in three days. However, she failed field sobriety testing, the arrest report says.

Police also took a sample of her blood to test her blood alcohol level.

“She killed an innocent person,” Kohley McCargo said. “Had it not been my brother, it could have been someone else.”

Conway, 45, now faces a charge of intoxication manslaughter.

She has prior convictions for felony theft, a misdemeanor for failure to provide identification and a misdemeanor for driving with a suspended license

His sisters say Hammon grew up in Oklahoma. He was the second youngest of five children.

He moved to Dallas less than a year ago and started his roadside assistance business. His sisters say he liked Dallas and that business had been good.

“He loved electronics. He loved cars and he loved to work,” said Kohley McCargo. “He was a very hard worker.”

His sister has a message for those that may drink and drive over the St. Patrick's Day weekend.

“Why risk someone's life or your own life over alcohol, that's not smart,” she said. “Just stay home and drink.”