a fifth man comes out and stabs Don, puncturing Don's left lung and nicking Don's pulmonary artery. After Don is out of surgery, he goes into cardiac arrest and flatlines. The doctors are able to revive him. Don finally wakes up to Alan by his bedside. Later, his team comes for a visit. He tells them that he is allowed to return to desk duty initially and then full duty about a week later. While recovering at home, Don realizes that his job does not influence him as much as it has in the past. He shows concerns for Charlie's reaction to his stabbing. About three weeks after the stabbing, Don goes to Charlie's new office for the first time, being pleased about Charlie's new office. After finding Charlie's converted police scanner, Don cautions Charlie about the risk of burnout from police work. Fifteen minutes after leaving, Don receives a phone call from Charlie saying that Amita has been kidnapped. Throughout the investigation, Don keeps putting himself in Charlie's shoes and even asks Larry to help with the math. When they find Amita, Don is the one to reunite Amita and Charlie. At home, Don confides in Alan that he had his faith in God's existence shaken by the stabbing and that he does not know whether he wants to continue his spiritual journey. Since the beginning of season 6, there are signs that Don becomes fragile and more hesitant. His chase toward a runaway sniper in season premiere and his hunt to a rogue agent in episode 2 are not as quick and overwhelming in previous seasons. He also admits that the stabbing really shocked him, meaning that he has more concern on his safety now. Although, he admits he has a "lost a step" to his father, not remembering when he has beaten David or Colby in a sprint, he is quick enough to kill his old, tough FBI pal Pete "Petey" Fox, who is an expert in a gunfight and has fallen to the wrong side of the law. He grieves the loss of his adrenaline-chasing friend. In response to a mid-life crisis sparked by his stabbing and the loss of Petey, Don buys a motorcycle. Midway through season six, he proposes to Robin. She gets cold feet, stating that she felt he is still in the middle of significant changes in his life. However, she tells