WASHINGTON, Aug. 5 - As the mother of two young sons, Frances Fragos Townsend, President Bush's domestic security adviser, believes that families need to know as much as possible about terror threats. That is part of the reason Ms. Townsend has moved from the shadows to a center stage role as an advocate of raising the threat level with urgent warnings of a possible attack. "I don't want the government to make decisions for me and my kids," she said in a recent interview, in which she added that the government was much better prepared to detect and deter terrorist...