U.S.A.F. Research Lab Plans to Use Reusable Rockets as Intercontinental Cargo Carriers Our Bureau 298 Image for representation only. The U.S. Department of the Air Force is in the run to utilise emerging reusable rocket technology for global cargo transportation under its Rocket Cargo Vanguard project. On June 4, the department announced the designation of Rocket Cargo as the fourth Vanguard program as part of its transformational science and technology portfolio identified in the DAF 2030 Science and Technology strategy for the next decade. Additionally, the U.S. Space Force was designated as the lead service for Rocket Cargo Vanguard, marking the service’s first such program.