What exactly a blackout might look like is not clear at the moment. It could be anything from widespread power outages to just certain websites being taken down. Hopefully it’s the latter.
I haven’t found any other source on Trump buying Gab, so until I see otherwise, I’m assuming it was fake. However THIS appears to be real. POTUS’s new Gab account.
https://gab.com/realdonaldtrump
Maybe it is a series of blackouts for a day at a time in different areas while bad guys are taken down and evidence gathered?