The fiscal 2019 budget for the U.S. Air Force plans to grow the service from 55 to 58 combat squadrons over the next five years, while buying dozens of high-end aircraft and preparing to retire the B-1 and B-2 bomber fleets as the military retools for the high-end competition forseen by the Pentagon.

The National Defense Strategy, released in January, focused on the potential for great power competition between the U.S. and Russia or China. And in any such battle, the U.S. Air Force would play a critical role; hence, the service’s request for $156.3 billion for FY19, a 6.6 percent overall increase from the FY18 request.