They do it... why can't you... right?
I've seen so many political submissions here and most of them are crap... The left is constantly submitting "Bush sucks" "No war" crap and usually they have no real skill...
And now you've done the same thing... The message behind it is fine - I know - I was an active duty Marine from 90 - 96 so don't think for a minute that I'm bashing the country or the message - what I AM bashing is the lack of effort put into this...
Sorry to say it but the submission sucks... Fading a few pictures in and out along with a 100MB sound file is always going to suck regardless of the subject matter.
If you want to improve this, work on your transistions - do something a little more than tweening the alpha - experiment a little with masking - you can get really nice effects by using a picture that's larger than the mask and using a motion tween on the pic - you can also tween the mask as well - by stacking layers up like that, you can get a very animated or even cinematic feel from still photos. Keep trying.