Wyo. Stat. § 15-5-107
Only those persons who are seventy-five percent (75%) or more proficient may be certified for employment. A local fire commission may establish a higher required proficiency, in which case only those persons meeting the higher standard shall be certified by the commission for employment. The examination requirements of this section shall not apply to a person meeting the conditions of W.S. 15-5-122(a) if the person is employed by a police department. The examination requirements of this section shall not apply to a person meeting the conditions of W.S. 15-5-122(a) if the person is employed by a fire department. All other things being equal, persons honorably discharged from the military service of the United States shall be given preference for employment over other candidates. Those examined shall be graded upon their examinations and their approved ratings or grades entered in a register. Eligible applicants for the fire department shall remain on the registers two (2) years, except the hiring authority of each department may choose the option of a one (1) year register. Applicants for the police department shall remain on the register one (1) year, without reexamination and certification. However, the commission, in its discretion, may require further examination as to physical fitness, health and age qualifications prior to certifying the applicant to the governing body for employment.
W.S. 15-5-107