An individual is exempt from jury service only if the individual: Is at least 70 years old and asks the jury commissioner, in writing, for an exemption; Is an elected official of the federal Legislative Branch, as defined in 2 U.S.C. § 30a; Is an active duty member of the armed forces exempted in accordance with 10 U.S.C. § 982; or Is a member of the organized militia exempted in accordance with § 13-218 of the Public Safety Article.