There are two small patches of rust where the left corner of the hatchback and the body meet. Any good brands to seal/react with the rust area until I get back to the States from my current deploment? I just need to tell my son what to spray/brush on until I can sand it down and prep it.

 

Brush off loose rust, spray on phosphoric acid, let sit about 10 minutes, rinse off with water, dry, then apply some kind of rust paint. That will hold it until it can be fixed properly.