Requiring counties that offer self-insured employee health benefit plans to provide to firefighters employed by the county coverage for preventive cancer screenings in accordance with certain guidelines; authorizing a county to satisfy the requirement by providing a certain annual examination or applying for a certain grant; prohibiting counties from imposing a copayment, coinsurance, or deductible requirement on the coverage; and requiring the Maryland Health Care Commission to conduct a certain study and report by December 1, 2028.