Why am I being told to change my MedXPress password when logging in for the first time?

Your account confirmation e-mail will include a temporary password to let you log into FAA MedXPress. So that your account remains secure, you will be required to change your password when you first log in. Passwords must begin with a letter, contain between 8 and 12 characters and include at least three of the following four character groups: English upper case characters (A through Z); English lower case characters (a through z); Numerals (0 through 9); Non-alphabetic characters (such as !, $, #, %). Passwords are case sensitive.