Plot: 2012/03/14 Headlines: Panetta Visits Afghanistan Following Massacre; Santorum Wins 2 Southern Primaries; Japan Earthquake Triggers Tsunami Warnings; IAEA Warns of Safety Risks from Aging Nuclear Plants; 4 Banks Fail Fed's Stress Test for Economic Crisis; Banks to Pay New York $25 Million for Mortgage Abuses; Guatemala: Soldier Deported from U. S