Launch probability: 80%

Sixth geosynchronous satellite of the Space Based Infrared System program (SBIRS), providing capabilities for early missile warning and missile defense. SBIRS GEO-6 is the second satellite using Lockheed Martin's LM2100 combat bus.

Mission type: Government/Top Secret · Orbit: Geostationary Transfer Orbit

Rocket: Atlas V 421 · Provider: United Launch Alliance