Federal Government means all entities of the Government of the United States, including the U.S. Postal Service and the Postal Rate Commission. The District of Columbia is deemed to be part of the Federal Government with respect to employees of the government of the District of Columbia (DC) who were first employed by that government before October 1, 1987. A Department of Defense or Coast Guard nonappropriated fund instrumentality (as described in 5 U.S.C. 2105) is not considered part of the Federal Government except for the purpose of applying 531.211 and 531.212 to employees covered by 531.216 upon employment in a GS position.