Support for allowing military personnel to carry firearms for self-protection following the terrorist attack upon military personnel in Chattanooga last week has been strongly declared by several presidential candidates, is building in Congress, and has already taken shape for National Guardsme …

Beretta employee Eric Livingston tests newly minted M9 pistols in the Baretta manufacturing unit in Accokeek, Md. The Army wants a new sidearm, and for the first time traditional military supplies are facing competition from civilian manufacturers. (Linda Davidson/The Washington Post)ACCOKEEK, Md. — …