User blog comment:Curtis712120/Earth-3/@comment-28458080-20160623042720/@comment-27700324-20160627050110

What i meant was that they would assume after Zoom took him that the Flash wasn't real and that he was just criminal suspicions. That is why by the time of Supergirl season 2 he will show that the Flash is real.

The D.E.O didn't care about human threats, after they discover that they aren't aliens they move on. Kara convinced them that they should deal with dangerous metas in National City, and they only did it then.