Agena Tug Installed in Orbiter Cargo Bay 
Evolutionary Stage Agena With Intelsat IV Payload 
Agena Tug on Orbit with Lockheed Communications Satellite
Shuttle Program at Astronautix
Image credit: Lockheed
Image source: NASA NTRS
Shuttle Program at Astronautix
Image credit: Lockheed
Image source: NASA NTRS
