How about using something like
http://www.cnn.com/services/warriorone/
or
http://commons.wikimedia.org/wiki/Fi...03-03-03_U.jpg
or
http://www.flickr.com/photos/bidgee/5245804749/
The way I figure a news crew could use any one of thses types of vehicles and possible towing a small trailer with could used to living space for the crew or they could have a cargo model for carrying, tent rations, water ect
They could be in the company of Public Affiars team which would travel is standard military vehcile
I more rear team might a bigger vehcile an set up, the last major excerise I was on the brigade had huge media tent and parking area for they vehicles and another sent up for the discovery crew that was fliming a whole tv show about us.