I forgot to remove the part where I said the mission is provided and didn't because you can't attach mission files. Oh well.

Fish will swim up onto land momentarily; other animal issues such as snakes not moving flat against inclines.

Appropriate weapon availability is important, but at this stage I don't consider it that high of a priority. Additionally, many US arms have been available and used by foreign militaries, even hostile militaries, for decades; it is not unreasonable to assume that Iran has access to specific models of m14s and copies as Shyrke2a has said.

As a side note, Hollywood is actually obligated to not have accurate representations of military personnel in fictional movies; this is why uniforms on military personnel in movies are, usually, not entirely proper.