TBogg points out that an honorable discharge from the National Guard isn’t necessarily a testimonial.
John Allen Muhammad, convicted last November for his participation in the D.C. sniper shootings, served in the Louisiana National Guard from 1978-1985, where he faced two summary courts-martial. In 1983, he was charged with striking an officer, stealing a tape measure, and going AWOL. Sentenced to seven days in the brig, he received an honorable discharge in 1985.