[cpeterso]

Working somewhere less than a year is a yellow flag to future employers, but it is not a big problem if you have a reasonable story. If you switch jobs again, you might even consider omitting the defense contractor job from your resume. Not because a short job is bad necessarily, but it would give you more room on your resume to highlight your other work experience (and present a simpler, more linear "story" for busy recruiters reading through tons of resumes).

[allwein]

I wouldn't even call a single instance of a bad job a yellow flag. Lot's of people have accidentally taken a crap job at one point or other in their life. I'd say it's actually a credit to the poster that he realized so quickly that his prospects there are limited and doesn't want to waste his time there.