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[i]A worst case would be some [kind of] integrated failure mechanism between the helium leaks and the RCS thrusters. We fire one OMAC [Orbital Maneuvering and Attitude Control engine] in each of the four dog houses, and then the RCS jets are there to hold the orientation. We could lose a number of jets. It's really the multiple failure case where, if you had a helium leak in a certain dog house, and that took out the OMAC in that dog house, you could end up with some cases that aren't as easily controlled, and that's really the more stressing cases that the team is worried about.[/i]
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