In one embodiment, among others, a method includes evaluating a plurality of contingencies to generate a plurality of {TAIL ~ contingency results}, where at least one of the contingency results includes {HEAD ~ an overload condition} 
In one embodiment , among others , a method includes evaluating a plurality of contingencies to generate a plurality of { TAIL ~ contingency results } , where at least one of the contingency results includes { HEAD ~ an overload condition }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD