Even if corrosion, metal fatigue and parts obsolescence were not taking a toll on the planes, potential adversaries are buying better and better air defenses that will make it harder for the bombers to reach their targets in future wars.

FORBES: Air Force Wants A Bomber That Balances Cost With Capability

Later, inspectors found corrosion of steel around joints in the bridge and fatigue cracks in the approach spans.

CNN: States warned to inspect bridges