Britain's largest defense contractor managed to escape U.K. inquiries into secret payments made in a massive arms deal, but now that those payments have been traced to a U.S. bank account, the DOJ will likely launch its own investigation. Stephen Beard reports.

About a quarter of Americans currently infected with HIV don't know they're living with the virus, but the public health community is divided over the best way to find and treat that population. Janet Babin explains.