Terrorism: Adam Gadahn grew up in la-la land, knowing he could be anything he wanted. Of all he might've chosen from his banquet of opportunity, he picked al-Qaida. Now he's charged with treason. It's high time. Like John Walker Lindh of hot-tubbing Marin County, Calif., Gadahn grew up in sybaritic Orange and Riverside counties, a garden setting with vast opportunities most people in the world can only dream of. His self-absorbed hippie parents reared him permissively and now have no clue what went wrong. Amid fast-food joints, CDs, flush toilets and lots of pricey toys, Gadahn, a one-time death-metal rock...