Claiming the shortage of women in military academies puts female students at greater risk of sexual assaults and harassment, several groups sued the U.S. Department of Defense Tuesday seeking access to the schools’ admission policies and enrollment numbers. The Service Women’s Action Network, American Civil Liberties Union (ACLU) and ACLU of Connecticut sued the department for violating the Freedom of Information Act. The groups say they sought enrollment data and information about recruiting and admission practices from the department in November and the information has been withheld. The groups want to see enrollment records from the U.S. Air Force Academy, U.S. Naval Academy and U.S. Military Academy at West Point. Officials at the Department of Defense did not respond to requests for comment.