Essam Al-Ridi says his life is "ruined" because he agreed to testify for the Justice Department against al Qaeda members. — Airline pilot Essam Al-Ridi admits helping Osama bin Laden buy a plane to transport Stinger missiles 10 years ago. But he says he did the right thing as a U.S. citizen by testifying and helping to put four al Qaeda members behind bars. The 1992 deal was years before bin Laden emerged as a terrorist leader, and Al-Ridi has never been accused of belonging to bin Laden's al Qaeda terror network. Al-Ridi, 43, was born in Egypt but came...