John Travolta and Kelly Preston are the parents of a son, Jett Travolta. Travolta and Preston, who are Scientologists, said in a statement that they prepared for "the smooth birth by following the method recommended in Dianetics by L. Ron Hubbard, which stresses complete silence during delivery." A spokeswoman for the Church of Scientology says Dianetics recommends no noise - from doctors, nurses or the mother - during delivery.