I can buy the lack of training, as a support person now I don't get nearly the same amount of range time I did when I was in the Infantry. I can see quite the difference in my marksmanship level from 3 years ago to now. Couple that theory with the order from higher to let them escape and it's a pretty open and shut case to me. As someone said previously, I would hate to be the poor TK that has to answer to Vader for accidently popping a cap in his son.