I was pretty much under the impression this was kind of a simple, intro-type mission and we were basically calling our own shots. If you want to throw in some more bandits that's fine. So far I count Lonnie and Clem engaged with about [i]nine[/i] Yerrill fighters but that's assuming that the Mig-23 didn't hit anything with any of his shots. This also assumes that ALL the fighters went after the two MiGs which would work out well for the ground forces. 

Something I want to point out as well is that from a writing standpoint we don't really have a whole lot of info regarding the types of Yerrill craft and we're kind of winging it (pun intended) as far as writing about their capabilities. Some of the characters have been fighting them for some time and are familiar with all the different types. From what I've read so far in the plot details and in the IC posts there are fighters, interceptors, larger attack craft, troop carriers, bombers as well as large command craft and they all [i]generally[/i] have a similar appearance. Their weapons are largely energy based, but some do launch missile-like projectiles and use a form of radar.

Lastly, it's the Expeditionary forces that are technically on the [i]offensive[/i] in our story. Humanity apparently was good enough to push the Yerrill back through the portal in less than five years which would seem to indicate that we're better at fighting than they are (imagine that) while they seem to have mastered some form of dimensional travel that didn't necessarily translate into combat  prowess. Maybe humanity is the first race they ever squared-off against that had the ability to fight back? 

These could all just be fun plot items that are yet to be revealed, but its food for thought.