Aces High is having a convention right now.
This weekend.
There are people that have paid good money to show up and have face time with the actual HTC cast and crew, and hear news, ask questions, play with each other face to face (bringing their computers), and often during this time HiTech himself will do something to the main arena for their benefit (maybe to show them something, or to enable flying PT boats, or enable guns on the RV7s, etc -- typically referred to as "the evil Con mission" etc)
So that's the story. You happened to get caught in the Con arena.