A U.S. Air Force Titan 4B rocket successfully launched the 20th Defense Support Program satellite on May 8 in a mission staged from Complex 40 at Cape Canaveral Air Force Station, Florida. Images: USAF Video/Spaceflight Now.

Poised for launch The Titan 4B rocket sits atop Complex 40 on Monday morning awaiting its launch into space.
Repairmen at work Workers fix a troublesome access door on the side of the Titan 4B rocket during the countdown.
Liftoff! The twin solid rocket boosters are ignited and the Titan 4B rocket begins its journey.
Pitching on course A pitch maneuver begins second after liftoff to position the rocket for its arcing flight downrange over the Atlantic Ocean.
Bound for space Good work by tracking cameras provided stunning views of the rocket's climb to space.
Clear day A very clear day allowed for spectacular view of the lunchtime launch of the Titan from Cape Canaveral.
Using up the boosters Having consumed nearly all their solid-fuel, the solid rocket boosters are about to "burn out" and be jettisoned. The Titan's first stage engine has just ignited.
Booster separation The two spent solid rocket boosters are released from the rest of the Titan 4B, which continues onward with the power from the first stage engine.