Justice League of America Movie

Although OMACs are now cyborgs who take over human bodies via a virus (created from Brainiac-13-derived nanotechnology acquired by the U.S. Department of Defense and Lexcorp, which was then secretly introduced into general vaccine supplies) in order to assassinate any and all beings with superpowers, they still retain OMAC's familiar crest and Brother Eye symbol on their chest. The OMACs are featured in the OMAC Project mini-series that leads up to Infinite Crisis. Source