1. A system for improving vehicle survivability, comprising at least one processor programmed to: build an evaluation model based at least in part on mission information, the mission information comprising vehicle information regarding at least one vehicle, the mission information further comprising threat information regarding a plurality of threats to the at least one vehicle, wherein the evaluation model is based on a plurality of cells that collectively represent a physical region to be traversed by the at least one vehicle; use the evaluation model to assign a numerical measure to each potential action of a plurality of potential actions for the at least one vehicle, the numerical measure being based at least in part on first and second measures of signature exposure of the at least one vehicle resulting from executing the potential action, wherein the first measure of signature exposure relates to a first threat of the plurality of threats and the second measure of signature exposure relates to a second threat of the plurality of threats; and select, based at least in part on the respective numerical measures assigned to the plurality of potential actions, a sequence of actions to be executed by the at least one vehicle to improve the at least one vehicle's survivability against the plurality of threats, wherein the sequence of actions comprises a first action by which the at least one vehicle is to enter a first cell in the physical region and a second action by which the at least one vehicle is to leave the first cell and enter a second cell in the physical region.