Just a note on messages, with a long campaign i've always found it useful to divide the campaign into parts......and label them, and the messages accordingly.......example....
part 1=run amock
part 2 = Fart in a windstorm
etc
etc
so all messages in part start with "RA-XX" where XX is the number of the mission in that part. RA-04 would mean that the file goes to the fourth mission in run amock. This helps a lot when tweaking things and troubleshooting pesky human errors.
Briefings get labelled something RA-01-B1, the B is for briefing, and the one is for the breifing page, D is for.......you guessed it, Debreif, and CB is command brief. sometimes it just helps to anal about organizing things.