Doctors could remove the breathing tube for U.S. Rep. Gabrielle Giffords Friday as she continues on her "miracle" journey to recovery after an assassination attempt and mass shooting, her husband said.

Though the congresswoman had been shot in the head less than a week ago, she continues to make progress, her husband and doctors told CNN.

Her husband, Mark Kelly, told Dr. Sanjay Gupta, CNN's chief medical correspondent, that his wife is aware to some degree of what is going on around her. It was Kelly's first interview since the tragedy.