In the fragments of Text II: “did not hand off control of a departing aircraft to another control center” (lines 33-35) and “It has taken decades to try to come up with new fatigue rules for pilots” (lines 71-72), the expressions hand off and come up with mean, respectively,
n the fragment of Text II: “‘So, there’s an element of individual responsibility that has to be dealt with.’” (lines 15-16), the expression has to expresses an idea of