July 30, 2024, at 6:45 a.m. EDT

United Launch Alliance's Atlas V launches USSF 51 mission, an undisclosed payload for the United States Space Force (USSF), to orbit from Florida's Cape Canaveral Space Force Station Space Launch Complex 41.

This marks the 100th national security mission for ULA, and the last for Atlas V as this fleet is retiring with all of its 15 remaining flights are reserved for six Starliner missions, eight launches for Project Kuiper, and one launch for ViaSat.