A rebel army is attempting to overthrow the elected government of the Russian Federation. The United States government has decided to assist its ally by quickly sending troops and supplies to the Federation. A plan now needs to be developed for shipping the troops and supplies most effectively. Depending on the choice of the overall measure of performance, the analysis requires formulating and solving a shortest-path problem, a minimum cost flow problem, or a maximum flow problem. Subsequent analysis requires formulating and solving a minimum spanning tree problem.