OnNet USA today announced that the closed beta test of Heroes in the Sky will begin today from 4PM-7PM PST and end on September 20th. Each day (9/18-9/20) the closed beta test will be for three (3) hours only, from 4pm-7pm. Heroes in the Sky is a World War II flight combat simulation massively multi-player online game where you can play against the system or against a multitude of other people from around the world. There are two maps (The Pacific and Normandy) and dozens of realistic weapons to choose from throughout the game. The Dog fighting feature offers gamers three options: Survival, Deathmatch and team Deathmatch. Visit the official website for details.