Only the words that are made up of them do. The individual letters in a word don't mean anything. By themselves, they simply indicate what sound you're supposed to make. For example, the letter s indicates the s sound (which sounds like ssssss).
About Rupert Boneham. Rupert Boneham (born January 27, 1964) is an American mentor for troubled teens, who became known to reality television audiences in 2003 as a contestant on Survivor: Pearl Islands where he placed 8th. He later appeared on the All Stars, Heroes vs. Villains, and Blood vs. Water seasons of Survivor, placing 4th, 6th, and 20th respectively.
The first season of the American political drama series Designated Survivor began airing on September 21, 2016 on ABC. The series was ordered straight to series by ABC in December 2015, with a formal announcement of 13 episodes in May 2016. Eight days after the premiere, on September 29, 2016, ABC gave the series a full season order. The series is produced by ABC Studios and The Mark Gordon Company, and is filmed in Toronto, Canada. The series was renewed for a second season on May 11, 2017.