I do not think they can deployed Federal Trumps in the US because of the Posse Comitatus Act. Federal Trumps can not preform law enforcement duties.
President Trump can invoke Wartime law to ramp up production of medical equipment. I think he can use federal Trumps to support the hospital (building and manning Mash units). That is not law enforcement duties.
Any law enforcement would be handle by the National Guard. The Federal troops might be able to act as support units, that is a gray area.
https://en.wikipedia.org/wiki/Insurrection_Act
On September 30, 2006, the Congress modified the Insurrection Act as part of the 2007 Defense Authorization Bill (repealed as of 2008). Section 1076 of the law changed Sec. 333 of the “Insurrection Act,” and widened the President’s ability to deploy troops within the United States to enforce the laws. Under this act, the President may also deploy troops as a police force during a natural disaster, epidemic, serious public health emergency, terrorist attack, or other condition, when the President determines that the authorities of the state are incapable of maintaining public order. The bill also modified Sec. 334 of the Insurrection Act, giving the President authority to order the dispersal of either insurgents or “those obstructing the enforcement of the laws.” The law changed the name of the chapter from “Insurrection” to “Enforcement of the Laws to Restore Public Order.”
He’s dispatched the National Guard in some states last I heard. In others they’re standing by and ready. Pittsburgh using them to get out food box’s etc.