KENNEDY SPACE CENTER, FLA. - Workers in the Orbiter Processing Facility settle into place one of two rudder speed brake actuators onto a table to measure the alignment of its bearings. The actuators move an orbiter’s rudder, speed brake, elevons and main engines during flight.

KENNEDY SPACE CENTER, FLA. - Workers in the Orbiter Processing Facility settle into place one of two rudder speed brake actuators onto a table to measure the alignment of its bearings. The actuators move an orbiter’s rudder, speed brake, elevons and main engines during flight.

KENNEDY SPACE CENTER, FLA. - Workers in the Orbiter Processing Facility settle into place one of two rudder speed brake actuators onto a table to measure the alignment of its bearings. The actuators move an orbiter’s rudder, speed brake, elevons and main engines during flight.