T+0:00	Liftoff
The twin Solid Rocket Motor Upgrade (SRMU) boosters are ignited and the Titan 4B rocket launches from Space Launch Complex-4 East at Vandenberg Air Force Base, California.
T+2:13	Stage 1 Ignition
The Titan 4B rocket's core vehicle stage 1 engine -- the Aerojet LR87-AJ-11 -- is ignited. The liquid-propellant powerplant burns Aerozine-50 fuel and nitrogen tetroxide oxidizer.
T+2:28	SRMU Separation
Having consumed all their solid-propellant, the two Alliant Techsystems-built solid rocket boosters are jettisoned to fall into the Pacific Ocean.
T+3:30	Jettison Payload Fairing
The payload fairing buit by Boeing that protected the NRO spacecraft during atmospheric ascent is separated once it is no longer needed.
T+5:26	Staging of Titan Core
The first stage engine shuts down and the second stage Aerojet LR91-AJ-11 engine is ignited. The spent first stage is jettisoned from the rest of the space-bound Titan 4B rocket one second after the second stage is started.
T+9:18	Stage 2 Shutdown
The liquid-fueled second stage engine completes its firing after reaching the desired altitude in space for deployment of the payload.
T+9:30	Spacecraft Separation
The classified National Reconnaissance Office satellite cargo is released into space from the second stage to complete the Titan 4B rocket's launch.