A Greeneville couple whose soldier son was killed in Iraq want to expand their lawsuit against an Arizona online merchant of anti-war T-shirts to cover thousands of casualties and seek more than $40 billion in damages. An amended complaint filed on behalf of Robin and Michael Read of Greeneville seeks to make the lawsuit a class-action case covering the heirs of all U.S. service members killed in the Middle East since Sept. 11, 2001. Dan Frazier’s T-shirts listed Iraq war casualties’ names, and Frazier’s lawyer says the First Amendment protects his client’s political speech. The Reads’ amended complaint filed Tuesday in federal court in Greeneville says Frazier has no right to make a profit from commercial sale of products using the casualties’ names without permission.