Yeah, I give it a 98% probability that this is a hoax. Delta soldiers would not discuss any of their current missions with family members, and they are not needed for riot control. There's a very slight chance that they are going in to rescue some federal or state emergency workers who are trapped and taking small arms fire.
I give it a 100% chance this is a hoax. At a presser just now they explained that the military will not, repeat NOT be involved in this. It's National Guard only under the direct order of the governor. Other governors have loaned Military Police NG personnel on an agreement between the governors. If anything, they are SWAT teams coming in from other communities.