Substantial hits to the Lockheed Martin F-35 Joint Strike Fighter (JSF) program are among the biggest changes in the fiscal 2017 procurement budget.

The U.S. Air Force insists that the classified bomber program’s schedule has not slipped, but the service has adopted a new independent cost estimate.

The U.S. Navy’s fiscal 2017 plan maintains its funding for carriers and destroyers but – as recently directed by Defense Secretary Ashton Carter – cuts down on the number of Littoral Combat Ships and fast frigate successor vessels.

Under the plan, aeronautics funding would break the $1 billion barrier for the first time in more than two decades, peaking at more than $1.3 billion in 2023.

The budget plan appears to contain no real surprises except an apparent shift away from the Asteroid Redirect Mission (ARM) that has been a centerpiece in President Barack Obama’s space policy.

The U.S. Navy plans to buy 94 aircraft in fiscal 2017, compared to the 153 the service had included in its fiscal 2016 spending plan.

The reflects a base Navy future years defense program from 2017 to 2021 of $826.4 billion, or about $1.6 billion higher than the FYDP presented with the fiscal 2016 budget.

The ramp-up comes while the Army’s choice of truck maker Oshkosh for the contract continues to be challenged by losing competitor Lockheed Martin.