The Defense Department announced yesterday it has changed from "likely" to "indeterminate" the likelihood that a Persian Gulf War soldier was exposed to mustard agent chemical weapons in Iraq. The updated version of its so-called case narrative, "Reported Mustard Exposure Operation Desert Storm," downgrades the likelihood that then-Pfc. David Fisher was exposed to mustard agents. The change was made due to "conflicting information between key pieces of physical evidence," according to an Oct. 26 statement summarizing the findings of the...