The director and agents so appointed shall be citizens of the United States and of the State of Mississippi, and of good moral character. The agents shall be not less than twenty-one (21) years of age at the time of such appointment. In addition thereto, those appointed shall have satisfactorily completed at least two (2) years of college studies. However, two (2) years of satisfactory service as a law enforcement officer and the completion of the prescribed course of study at a school operated by the Bureau of Narcotics and Dangerous Drugs, United States Justice Department, shall satisfy one (1) year of such college studies, and four (4) years of satisfactory service as a law enforcement officer and the completion of the prescribed course of study at such federal bureau school as stated heretofore shall fully satisfy the two (2) years of college requirement. During the period of the first twelve (12) months after appointment, any employee of the bureau shall be subject to dismissal at the will of the director. After twelve (12) months' service, no employee of the bureau shall be subject to dismissal unless charges have been filed with the director, showing cause for dismissal of the employee of the bureau. A date shall be set for hearing before the director and the employee notified in writing of the date of such hearing and of the charges filed. The hearing shall be held not less than ten (10) days after notification to the employee. After the hearing, at which the employee shall be entitled to legal counsel, a written order of the director shall be necessary for dismissal and the decision shall be final. Any such order of the director shall be a public record and subject to inspection as such.