[HOE] The Night Convoy (MARSHALS ONLY! My posse had better scram!)

Ok That should be enough. Here's the situation, fellow badge wearers. My posse is in Arizona, holed up in a survivor settlement. I basically reused the story from the Deadlands Weird West Dime Novel Night Train ( ie Group of hunters, one's a murderer who gets caught, lynch mob, etc,etc). My Night Convoy is a group of four heavily armored and armed semis. Three of them are dry box rigs and one is a reefer unit with meathooks hanging from the ceiling. The NC live in a truck depot built near a series of caves and raid out about twice a week. They have 45 nosferatu, 4 master vampires, and about 10 human servants. My questions are this: 1) What tactics should the baddies use to take down a settlement? 2) Has anyone come up with rules for human servants of vampires? 3) Since my group is fairly smart and has found two scenes where the Convoy hit before, they know they are facing a massive amount of vampires. The junker in the group would like to build Blade-style UV flashlights. Any ideas on how she could do this would be appreciated. Thanks in advance for any help y'all can send my way.