The superintendent, also designated as colonel, shall, with the approval of the Governor, appoint such subordinate officers of the Nebraska State Patrol as lieutenant colonel, majors, captains, lieutenants, sergeants, corporals, patrol officers, and such other employees as may be necessary to carry out the provisions of this act. The salaries of all such appointees shall be fixed by the superintendent, with the approval of the Governor. In addition to his or her salary, each sworn employee of the Nebraska State Patrol shall receive an expense allowance of one hundred dollars per month. All such appointees shall be bonded or insured as required by section 11-201. Premiums shall be paid from the fund appropriated to the Nebraska State Patrol.