There are two Tech 2 Engineering Stations in the game, the Cybran T2 Engineering Station, nicknamed The Hive and the UEF T2 Engineering Station, nicknamed The Kennel. While both are different in use, they both serve to "Get work done", as they both have very fast build speeds when compared to traditional engineers, especially after upgraded. When fully upgraded, The Hive is cheaper and has a faster build rate, but the Kennel's engineers (Rovers) can roam around, outside of their buildings' assist radius, making it a far more versatile building. The Rover's ability to roam around and reclaim or capture land units without fear of reprisal is considered an exploit by some.