Though Elizabeth Smart’s kidnapper Brian David Mitchell often watches the testimonies in the federal trial against him from a room adjacent to the court room, he usually ignores the proceedings. However, his demeanor drastically changed when his wife Wanda Barzee testified, according to the guard who was with Mitchell.

SHOCKING PHOTOS: Elizabeth Smart Evidence In Kidnapping Trial

“He was very attentive,” Dennis Durando, a deputy with the U.S. Marshal’s Service, said.  “He stood as close to the monitor as he possibly could and didn’t move. He was very still.”

According to Durando, Mitchell sleeps, exercises and occasionally sings in the room where he watches the trial from. Durando has escorted Mitchell to and from court for the past year.  He said Mitchell sometimes rolls up tissue paper and sticks it in his ears “as ear plugs and lays down on the bench,” to sleep during the rest of the testimony.