Any former uniformed highway safety patrolman who has had not less than two (2) years of prior service with the Highway Safety Patrol and who was disabled by wounds or accident in line of duty, and who has returned to duty with the Highway Safety Patrol, and who becomes a member of the Highway Safety Patrol Retirement System with prior years' service credits as provided in this chapter, may, if his disability from his previous wounds or accident received in line of duty returns and he again becomes totally and permanently disabled, receive full benefits as a disability retirant for service-connected disability.
Upon the application of a member or his employer, any member who is not yet eligible for service retirement benefits and who has had at least five (5) years of creditable service may be retired by the administrative board, not less than thirty (30) and not more than ninety (90) days next following the date of filing the application, on disability retirement allowance, provided that the Medical Board of the Public Employees' Retirement System of Mississippi, after an evaluation of medical evidence, which may include a physical examination by the medical board, certifies that he is mentally or physically incapacitated for the further performance of duty, that the incapacity is likely to be permanent, and that he should be retired. This disability need not be service-connected.