United Launch Alliance is the joint venture between Boeing and Lockheed Martin that has carried most US Space Force national-security missions for two decades. Atlas V is retiring; Vulcan Centaur (BE-4 first stage, Centaur V upper stage) is the active replacement. LaunchDetect tracks every ULA launch from Cape Canaveral SLC-41 and Vandenberg SLC-3E.
| Country | United States |
|---|---|
| Founded | 2006 (Boeing + Lockheed Martin JV) |
| Headquarters | Centennial, Colorado |
| Active fleet | Atlas V, Vulcan Centaur, Delta IV Heavy (retired) |
| Primary pads | Cape Canaveral SLC-41, Vandenberg SLC-3E |