Joe,
If I remember correctly, you are applying to OASC??
Why are you researching all of these magazines?? When you go to OASC, they are looking for someone who wants a commission, not someone who is a 'gimp' on all of the listing's you have been given. Sure, they are extra info. to read into, but if you are preparing properly, you should have so many notes you don't know what to do with them! Seriously, I am applying for ground branches and I have so many pieces of paper, I don't know where to start. Jane's etc will give you info on stuff you already (should) know about but in so much depth they won't even have time to ask you in the interview. They will be of no real use to you.
Concentrate on what you are applying for and make sure you know it all off by heart. That will be enough....trust me...
LM