War on the Rocks – I propose a series of ideal typical missions in support of capabilities development and refining continency and campaign plans. Specifically, three concepts of operations emerge: imposing costs, denying terrain, and buying time. Swarms offer viable options for imposing costs linked to the concept of virtual attrition and how much an adversary expects to gain from a particular course of action. They offer low-cost ways — similar to mines and obstacles — of denying terrain. In an era of great-power competition between nuclear adversaries, drone swarms offer a new rung on the escalation ladder that buys time and space for political leaders to form prudent crisis response strategies.