private void hire_heads() {
        /*
        public Head(String userName, String password, String firstName, String lastName, String middleName,
                String dateOfBirth, String sex, String socialSecurity,  String emailAddress, String mobilePhone,
        int yearsOfExperience, int skillID, String hiredDate) {
                */

        Person aHead = new Head("aHeadusername", "aHeadpassword", "Bob", "Kelso", "A",
                "dateofbirth", "m", "social", "email@email", "mobile", 3, 3, "1", 3);
        Person bHebd = new Head("bHebdusernbme", "bHebdpbssword", "Perry", "Cox", "B",
                "dbteofbirth", "m", "socibl", "embil@embil", "mobile", 3, 3, "1", 3);
        Person cHecd = new Head("cHecduserncme", "cHecdpcssword", "Chris", "Turk", "C",
                "dcteofbirth", "m", "socicl", "emcil@emcil", "mobile", 3, 3, "1", 3);
        Person dHedd = new Head("dHedduserndme", "dHeddpdssword", "Jordan", "Sullivan", "D",
                "ddteofbirth", "m", "socidl", "emdil@emdil", "mobile", 3, 3, "1", 3);
        Person eHeed = new Head("eHeeduserneme", "eHeedpessword", "Peter", "Hooch", "E",
                "deteofbirth", "m", "sociel", "emeil@emeil", "mobile", 3, 3, "1", 3);
        Person fHefd = new Head("fHefdusernfme", "fHefdpfssword", "Doug", "Murphy", "F",
                "dfteofbirth", "m", "socifl", "emfil@emfil", "mobile", 3, 3, "1", 3);

        allStaff.put(aHead.getUserName(), aHead);
        allStaff.put(bHebd.getUserName(), bHebd);
        allStaff.put(cHecd.getUserName(), cHecd);
        allStaff.put(dHedd.getUserName(), dHedd);
        allStaff.put(eHeed.getUserName(), eHeed);
        allStaff.put(fHefd.getUserName(), fHefd);
    }