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Workers in the Vehicle Assembly Building check the connections on the forward section of a solid rocket booster (SRB) being mated to the rest of the stack below it. The forward section of each booster, from nose cap to forward skirt contains avionics, a sequencer, forward separation motors, a nose cone separation system, drogue and main parachutes, a recovery beacon, a recovery light, a parachute camera on selected flights and a range safety system. Each SRB weighs approximately 1.3 million pounds at launch. The SRB is part of the stack for Space Shuttle Discovery and the STS-92 mission, scheduled for launch Oct. 5, from Launch Pad 39A, on the fifth flight to the International Space Station. Payloads on the mission include the Z-1 truss and Pressurized Mating Adapter-3, components of the Space Station