Billy Graham has grown weaker since his recent 95th birthday party, and son Franklin is requesting prayers for his father, reports CNN. "He is extremely weak but his vitals are good," Franklin wrote on the website of this father's evangelical association. "Our family would appreciate your prayers for him that the Lord would strengthen him." The elder Graham suffered a respiratory infection since the party but is out of the hospital and back at his home in North Carolina. A spokesman tells the AP that he is not in imminent danger.