Plot: 2010/04/22 Headlines: 11 Missing in Oil Rig Explosion off La. Coast; Senate Panel Advances Derivatives Regulation; Obama: Abortion Rights a Factor in Court Pick, But Not a "Litmus Test"; European Flights Resume Following Ash Closures; Pentagon: Iran Attack Not "Off the Table"; Trial Begins in Beating of Iraqi Prisoner; US to Withdraw Troops from Haiti; Israel Again Rejects Call for East Jerusalem Settlement Freeze; DC Council Abandons Incentives for Military Firm; Appeals Court Suspends Ruling Blocking ACORN Funding; Students Arrested Protesting Arizona Immigration Bill