An engineer performs field repairs on a small camera drone used for data collection as part of the Offensive Swarm-Enabled Tactics (OFFSET) Program. (DoD photo) Drone swarms with 1,000 unmanned aircraft could be possible within 5 years, DARPA leader says DARPA has conducted at least six field experiments at various locations as part of its Offensive Swarm-Enabled Tactics (OFFSET) program. Apr 5, 2022 By Jon Harper