As I once truly loved Allegiance but now found "a new harbour", I thought I might let you know: the very first international "Echelon WindWarriors" fansite now is open:
http://echelon-windwarriors.netEchelon WW probably is one of the most unique titles in the world for SciFi - flight fans, and so perhaps you might want to check it out as well. Even though Echelon looks simple in the beginning and is relatively easy to learn, the Russian developers dedicated their life to make this title to something special even without the big budget of western developers, so there is a lot to be mastered and a whole world to be discovered in the 1 GB installation: intense action, intelligent missions, interesting physics and a lot of modding features including one of the most complex mission editors in the world to make the game interesting for a long time. The demo is not very deep compared to the full installation, but still worth to check out.