It's a good question to ask, but the US would be far better placed to respond to this kind of attrition than any other nation. There'll be a stack of spare capa

It's a good question to ask, but the US would be far better placed to respond to this kind of attrition than any other nation. There'll be a stack of spare capacity in the training system and well-mothballed in airplane graveyards. The US is also awash with spare capacity in pilots. The carrier groups can be redeployed to weak areas. Plus diversified economy, good situation with food and energy sufficiency, transport redundancy, friendly border neighbours. Negotiations between Australia and the US have ended with parts for planes being exchanged (trade agreement in late 90s). Extra parts for previous-generation planes are high-value to partners, near-zero marginal cost to the US.