WILLOUGHBY, Ohio - Three of the four civilians killed and barbarically mutilated in Iraq were identified yesterday as Army veterans and a former Navy Seal. Family members and a spokesperson said Thursday that Jerko (Jerry) Zovko, 32, Michael Teague, 38, and Scott Helvenston, 38, died with another civilian Wednesday after they were hit by rocket-propelled grenades in a rebel ambush. The victims worked for Blackwater Security Consulting, a subsidiary of Blackwater USA based in North Carolina. Zovko's mother said she and her husband had suspected the worst, and their fears were confirmed yesterday when the president of Blackwater USA knocked...