OK: I liked the mission - nice and simple, nothing too flashy, just get on with it. Nicely done.
The only thing I picked up on was the timing and positioning of the attacks. Perhaps have the delays between waves a bit longer, but make the waves more powerful? If anything, the Nephilim seemed to be too close to launch their bombs. Make them arrive further away, have 6 per wing, and have slightly longer gaps between the waves.
On to the corrections - I've gone over the messages and brief/debrief quickly, and I've corrected and/or re-written them to what I think is better. I've tried to keep them similar, but some of your structures were a bit awkward so I rearranged them. Bear in mind that these are only my opinions, so ignore anything you don't like. Hope I've been of some help.
http://www.freewebs.com/pyro-manic/Topace.rar
