l. ron hubbard has died. >> the being we knew as l. ron hubbard still exists.er, the body he had could no longer serve his purposes. >> reporter: the next year, david officially becomes the head of the church, taking the title chairman of the board. he is now alone at the top. from now on, he will be the star of the church's olympic-sized celebrations. he will lead the church through some of its greatest triumphs like winning its tax exempt status. >> the irs issued letters recognizing scientology as fully tax exempt. the war is over! >> reporter: and he will spearhead the charge to bring celebrities into the fold. were you around when tom was joining the church? was it a high priority for your son? >> it was top priority. >> reporter: when we come back. i have asthma... ...one of many pieces in my life. so when my asthma symptoms kept coming back on my long-term control medicine. i talked to my doctor and found a missing piece in my asthma treatment with breo. once-daily breo prevents asthma symptoms. breo is for adults with asthma not well controlled on a lon