This is the fifteenth edition of the UNITED STATES AIR FORCE SUMMARY, produced as a service of the Assistant Secretary of the Air Force (Financial Management and Comptroller). It is usually published during the early Spring of each year, following submission of the President's Budget to the Congress. This year the decision was made to fore go publication during the usual March/April window, which would have limited coverage to the "Reagan Budget," in lieu of this delayed version which reflects the more current DoD amended FY 90/91 biennial budget submission. The tables have been updated to include FY 90 and FY 91 budget estimates, as well as the final FY 89 personnel and operations figures. Following our usual pattern, this current version has over 80 tables of budget, program and operations data, along with some 25 related charts. Part E covers key personnel within the Air Force and Congressional members serving on committees concerned with Defense issues.