Senior US Air Force officials testified before Congress on 14 May that the rapidly intensifying threat posed by China is compelling the Pentagon to reconsider whether its planned fleet of 100 B-21 Raider stealth bombers will be sufficient, as lawmakers pressed the military on ageing aircraft, tanker vulnerabilities, and the growing menace of low-cost drones.

Key Testimony: More Than 100 Bombers Needed

Testifying before the House Armed Services subcommittee on projection forces, Lieutenant General David Tabor stated that the Air Force now believes its current procurement target may be inadequate. 'My sense is that we do need more than 100,' Tabor told lawmakers, while noting that internal reviews were still underway to determine the precise number required.

Republican Congressman Rob Wittman reinforced the concern, arguing that the strategic environment had shifted dramatically since the B-21 programme was conceived more than a decade ago. 'The capability that aircraft provides is pretty amazing,' Wittman said, adding that the bomber would prove critical in a 'highly contested environment' where the US confronts a 'large-scale threat.'

Ageing Fleets and Tanker Vulnerabilities

The hearing centred heavily on the Air Force's fiscal year 2027 budget request and the mounting urgency of modernising bomber, tanker, and airlift fleets. Subcommittee chairman Trent Kelly warned that US adversaries were 'investing heavily in advanced capabilities as they try to close in on our lead.'

'Our bomber fleet is the cornerstone of our strategic deterrent,' Kelly said. 'Our mobility platforms are the backbone of our operational effectiveness.'

Air Force acquisition chief William Bailey defended Pentagon modernisation efforts, noting investments in advanced tanker survivability systems, satellite communications, and countermeasures. 'We have hundreds of tankers,' Bailey said. 'We have hundreds and hundreds of airlifters that also face those same style of threats.'

Tabor confirmed that the Air Force plans to fully modernise the KC-135 tanker fleet over the next six years, incorporating upgraded communications, tactical data systems, and hybrid satellite connectivity. Congressman Joe Courtney flagged that some tanker aircraft average nearly 64 years in age — a detail that underscored the scale of the modernisation challenge.

Drone Threat: The Cost Asymmetry Problem

Congressman Eugene Vindman pressed officials on whether the Air Force was adequately investing in offensive and defensive unmanned systems, citing lessons from recent conflicts in Ukraine and the Middle East. Bailey acknowledged the rapidly evolving threat landscape and warned against relying on costly missile interceptors to neutralise cheap drones.

'Shooting up a $1 million weapon at a $4,000 drone does not make sense,' Bailey said — a blunt articulation of the cost-exchange problem that has troubled military planners since drone warfare emerged as a decisive factor in modern conflict.

The Air Force said it was working closely with Joint Task Force 401 and the broader 'Golden Dome' missile defence initiative to strengthen counter-drone capabilities at military bases and overseas operations.

Next-Generation Airlift on the Horizon

Officials confirmed that planning was underway for a next-generation airlift platform to eventually replace the ageing C-17 and C-5 aircraft. The timeline for that programme was not specified, but the hearing made clear that the Air Force's modernisation agenda — spanning bombers, tankers, and airlifters — is being stress-tested by a strategic environment that has grown considerably more complex since most of these platforms were designed.

With China's military build-up accelerating and drone warfare reshaping battlefield calculus, the pressure on Capitol Hill to approve expanded procurement and faster modernisation timelines is set to intensify in the months ahead.