Appointment means any personnel action that brings onto the rolls of an executive agency as a civil service officer or employee as defined in 5 U.S.C. 2104 or 2105, respectively, a person who is not currently employed in that agency. It includes initial employment as well as transfer between agencies and subsequent employment after a break in service. Personnel actions that move an employee within an agency without a break in service are not covered. A break in service is a period of 4 or more calendar days during which an individual is no longer on the rolls of an executive agency.