if the threat risk value of any of the grid cells intersecting the flight path exceeds the allowable threat risk per grid cell, identifying {TAIL ~ an intermediate point} from which to deviate {HEAD ~ the flight path} based upon an analysis of the cumulative threat risk values of the grid cells 
from to deviate
if the threat risk value of any of the grid cells intersecting the flight path exceeds the allowable threat risk per grid cell , identifying { TAIL ~ an intermediate point } from which to deviate { HEAD ~ the flight path } based upon an analysis of the cumulative threat risk values of the grid cells
OTH OTH OTH OTH OTH 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 TAIL REL OTH REL REL HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH