To determine whether a permit may be issued to an applicant, the following areas shall be investigated and considered: Verification of the information supplied by an applicant in the application; Occupation or profession of the applicant; Criminal record of the applicant; The interests of justice; Medical history of the applicant as it may pertain to the applicant's fitness to use, purchase, or possess protective body armor; Psychiatric or psychological background of the applicant as it may pertain to the applicant's fitness to use, purchase, or possess protective body armor; Validity of reasons given by the applicant; The totality of the circumstances; Applicant's excessive or habitual use of intoxicating beverages and drugs; Information received from personal references and other people interviewed; Information received from business or employment references as may be necessary in the discretion of the investigator; Whether the applicant has any alternative available to him for protection other than wearing protective body armor; and The applicant's propensity for violence or instability which could reasonably render his owning, purchasing, or possessing protective body armor a danger to himself or to others.