These soldiers are the go-anywhere, fight-anything special forces of the Alliance that were trained at the Interplanetary Combatives Academy in Rio de Janeiro, Brazil. They had to survive combat situations "in an admirable and effective fashion" to receive the N7 rank. Many N7s now train other species in anti-Reaper asymmetric warfare. Slayers use implants to dramatically improve mobility. Their dizzying sword attacks can hit multiple opponents, and the Slayer's ability to slip fire makes them hard to pin down on the battlefield.