It was Season 7 of American Idol that introduced us to David Archuleta. Then the battle went on and came down to David and David in the finals of American Idol that season. David Cook took home the prize and David Archuleta came in second. Although he has been keeping up with his music, he made a huge announcement at his concert in Salt Lake City, Utah on Monday night. He announced that he is becoming a Missionary for The Church of Jesus Christ of Latter-Day Saints.