Part of the evolutionary process includes what is termed “supportive” documentation or evidence, such as an Agency’s determination that the Federal or Postal employee cannot be accommodated; the Flight Surgeon’s decertification of an Air Traffic Controller’s medical clearance; a Law Enforcement agency’s conclusions that a Federal Law Enforcement Officer is unable to meet the physical requirements of his or her position; and many other agency determinations which “support” a Federal Disability Retirement application. But “supportive” does not mean “primary”, and the Federal or Postal worker must always remember that such ancillary evidence must be in addition to the primary evidence submitted in a Federal Disability Retirement application.