A technician works on some of the ATV's 28 mini-jets (with red covering for protection). The mini-jets are part of the spacecraft's Attitude Control System (ACS). Around the front cone of the ATV, there are 8 mini-jets, or Forward Attitude Control System (FACS). And in the back of the ATV, there are the other 20 mini-jets (also called Vernier in astronautics). These 28 200-Newton thrusters are used for the attitude of the spaceship. Some are in goups of 2 thrusters (FACS), some in groups of 5 thrusters. (Kourou, 16 August 2007).