As part of our special investigation "Mission Creep: US Military Presence Worldwide," we asked a host of military thinkers to contribute their two cents on topics relating to global Pentagon strategy. (You can access the archive here.) The following dispatch comes from Katherine T. McCaffrey, an assistant professor of anthropology at Montclair State University in New Jersey and author of "Military Power and Popular Protest: The US Navy in Vieques, Puerto Rico".