Combat reconnaissance element Ozone Six (also referred to simply as Ozone Six) was a nonpermanent clandestine operations unit formed in the early 2560s under the Special Warfare Directorate's Black Operations. It was often charged with undercover patrols and investigations in addition to a number of other various high priority unconventional activities. Its initial commander was former ODST James Corbett, who led Ozone Six for more than twenty years.