Stryker Mobile Gun System (MGS). In addition to battling insurgents in the cities of Iraq, the soldiers assigned to the armored support vehicle have had to fend off attacks from critics back home, including some in the military itself. The 2008 Pentagon Authorization bill included language to limit funds for MGS until the Army drafts a report detailing fixes to the vehicle. In an annual report that the Army disputed, the Pentagon’s director of operational test and evaluation described the MGS as “not operationally effective.” Media reports quoting crews unhappy with some design elements also surfaced this year, further diminishing...