In June 2001, the Air Force proposed reducing the fleet from 93 to 60 aircraft and reducing the number of combat-coded aircraft to 36. Decision to Reduce and Consolidate the B-1Bs Based on Budget Concerns, Military Judgment, and Incomplete Cost Estimates

The decision to reduce the B-1B force was not based on a formal analysis of how a smaller B-1B force would impact DOD’s ability to meet wartime requirements. Air Force officials explained that their decision to reduce the fleet from 93 to 60 was made in response to an OSD suggestion to eliminate the entire B-1B fleet and to address significant funding shortages in the B-1B modification program. As a result, it is not clear whether they chose the most cost-effective alternative. As a result, Congress delayed implementation until the Air Force completed a review of bomber force structure and provided information on alternative missions and basing plans. The Air Force began relocating and retiring B-1Bs in July 2002. Guard B-1B Units Have Similar Missions, Lower Flying Hour Costs and Are at Least as Capable as Active Units

In comparing their assigned missions, flying hour costs, mission capable rates, aircrew experience, and operational readiness inspections, we found that Guard units (1) were assigned responsibility for substantially the same types of missions as their active duty counterparts, (2) had lower flying hour and higher mission capable rates during fiscal years 1999-2001, and (3) had more experienced crewmembers than the active duty units in terms of hours flown. We also found that active and Guard units received similar scores in their most recent operational readiness inspections. However, the Guard units’ mission capable rates were less affected. Guard B-1B Aircrews Are Generally More Experienced Than Their Active Duty Counterparts

The Air National Guard’s B-1B pilots and weapon systems officers are generally more experienced than their active duty counterparts. Appendix I: Scope and Methodology

To determine what types of analyses the Department of Defense (DOD) and the Air Force did of wartime requirements and basing options before deciding on the number of aircraft to retain and where to base them, we obtained and analyzed the only contemporaneous documents that were available from the Air Force—a briefing presented to the Secretary and the Chief of Staff of the Air Force on the fleet reduction and consolidation and a memorandum from the Secretary of the Air Force to the Under Secretary of Defense (Comptroller) outlining the Air Force’s proposal to reduce and consolidate the fleet. B-1B Conventional Upgrades. B-1B Bomber: Evaluation of Air Force Report on B-1B Operational Readiness Assessment.
Why GAO Did This Study

The B-1B began operations in 1986 as a long-range heavy bomber designed primarily to carry nuclear munitions. Although the B-1B's nuclear mission was withdrawn in October 1997, the Air Force continues to rely on the B-1B to support conventional wartime missions. The B-1B has the largest payload of the Air Force's three bombers, and recent modifications have provided the capability to deliver near precision munitions. Future upgrades to the B-1B are expected to provide greater flexibility by enabling it to carry three different types of bombs simultaneously and eliminate some of its long-term survivability and maintainability problems by improving its radar warning systems, jamming ability, and other electronic countermeasures. In May 2001, the Office of the Secretary of Defense suggested retiring the entire B-1B fleet by October 2001. In June 2001, the Air Force proposed an alternative that reduced the B-1B fleet from 93 to 60 aircraft and consolidated them at two active duty locations instead of the three active duty and two National Guard locations that housed the aircraft. Congress delayed implementation of the fleet reduction until the Air Force completed a review of bomber force structure and provided a report on alternative missions and basing plans. The Air Force began consolidating the fleet in July 2002.

What GAO Found

GAO found that Air Force officials did not conduct a formal analysis to assess how a reduction in B-1B bombers from 93 to 60 would affect the Department of Defense's ability to meet wartime requirements. Nor did they complete a comprehensive analysis of potential basing options to know whether they were choosing the most cost-effective alternative. A comparison of active and Guard units' missions, flying hour costs, and capabilities showed that active and Guard units were responsible for substantially the same missions but Guard units had lower flying hour costs and higher mission-capable rates than their active duty counterparts. Additionally, the Guard's B-1B aircrew members were generally more experienced, in terms of the number of hours flown, than the active duty B-1B aircrews because most Guard aircrew members served on active duty prior to joining the Air National Guard.