This clearly is an important contract for SpaceX, as the U.S Department of Defense has near-limitless budgets and could become an important customer of Starship. SpaceX already launches spy and communications satellites for the US military. However, in moving into logistics and the potential movement of munitions, the company may be treading on an ethical line with some space enthusiasts. It would also further embolden the claims of some international critics, such as Russian space leader Dmitry Rogozin, who has suggested that SpaceX aims to launch nuclear weapons into space.

https://arstechnica.com/science/2021/06/the-us-military-is-starting-to-get-really-interested-in-starship/