Singer Pat Boone (far left) and Suzan Johnson Cook, ambassador-at-large for international religious freedom, chat before the start of the National Day of Prayer observance on Capitol Hill on Thursday (May 2). The Rev. Rob Schenck, Washington evangelical leader, looks on. RNS photo by Adelle M. Banks

Singer Pat Boone (far left) and Suzan Johnson Cook, ambassador-at-large for international religious freedom, chat before the start of the National Day of Prayer observance on Capitol Hill on Thursday (May 2). The Rev. Rob Schenck, Washington evangelical leader, looks on. RNS photo by Adelle M. Banks