Marct,

"IF" you want some help....

I think you'll have to do a couple of things to identify bias.

1) How much, what kind, and where do serving military members get their media information.

2) An interesting side lobe in the stats is likely going to be "other military members" as a source of media.

3) They should rate different media formats (to assign bias scores) to particular venues and types of media.

4) It might be interesting to look at particular reporters/celebrities and see if there is a consistent feeling toward a personality versus a medium.