dsc99299.jpg

The #1 TD-339 vernier engine, showing some of the propellant plumbing.

Unlike the other two verniers (which were fixed), vernier #1 was gimballed; note the coils in the propellant supply lines to allow for this.

Note that the #1 landing leg is not deployed, but rather still in the stowed, nearly-vertical position (large-diameter, silver tube near the center-top of this photo), apparently due to lack of space in the display.