SORLIE: You've had this gun at your disposal since the beginning of the engagement. Why haven't you used it?
MURTAUGH: Firing it consumes all our fuel at once.
SORLIE: Even so, you played it pretty conservatively.
MURTAUGH: Consider the political angle.
The moment we fire the NUSPI in U.N.S. territory, we become permanent residents.
KATHRYN: Or a debris cloud.
MURTAUGH: That's also permanent.