Candidates approved by the specific military branch's secretary begin the training process by attending Warrant Officer Candidate School at Fort Rucker, Alabama, or other military education and training institutes. Prospective warrant officers also train in a technical specialty of their choice, such as Special Forces or military intelligence. After graduating, students are promoted to the warrant officer position at W-1 status, the lowest rank among warrant officers. After two years of service, officers may then earn promotion to chief warrant officer rank at grade W-2 and seek promotion to grades W-3 through W-5 sequentially every six years. Promotion to these higher-paying ranks depends of factors such as performance, fitness and scores on written and physical exams. The best way to begin the process is to contact the Warrant Officer Recruiting Team.