More than 100 US troops have now been diagnosed with brain injuries from Iran's missile attack on an Iraqi air base last month, Reuters and CNN report, citing anonymous officials. The number has been climbing steadily since the retaliatory attack, from an initial report that the US suffered no casualties to the first estimate of just 11 injured. The most recent number reported was 64 at the end of last month. The Pentagon had warned the number would continue to go up since symptoms, which include dizziness, headaches, sensitivity to light, and nausea, can take a while to manifest. (More Iran stories.)