Provides environmental.

О; soos УУУ, CONICAL RUDDER/ SEAL SPEED BRAKES / / FIN BOX ; / j | ROTARY LEADING EDGE ( COATED RCC TEE SEAL LEADING EDGE ( COATED RCC LEADING EDGE ACTUATORS TYPICAL INTEGRAL MACHINED SKINS FORWARD ATTACH INTEGRAL STRINGERS ET/SRB FORWARD ATTACH INTEGRAL STRINGERS ET/SRB FORWARD ATTACH INTEGRAL STRINGERS ET/SRB FORWARD ATTACH LIQUID OXYGEN INTERTANK TANK UMBILICAL RETRACTOR ACTUATORS MAIN LANDING GEAR SECONDARY EGRESS ROUTE PRIMARY INTERDECK.