What if a state decided to mount its own aid mission to Puerto Rico?

[Girard442]

Obviously, the assets and resources would be an enormous issue, but I was also wondering about the legalities? Could a governor sent the National Guard to a territory on his/her own authority? What about state employees?

On edit: I'm assuming the legislature would be on board with the idea.

[mercuryblues]

1. Some are

Columbia, SC (WLTX) - Hospitals in areas affected by Hurricane Maria are struggling to help their patients. There's a lack of electricity, water, and food. To help, hospitals all over South Carolina are taking in patients from the Caribbean.
"There's no doubt that the folks in Puerto Rico are suffering dreadfully," said emergency care physician Chris Lambardozzi. "There's little or no electricity, rapidly diminishing food or water sources... things are getting quite desperate there."
 
That is why the National Disaster Medical System (NDMS) and Federal Coordination Center (FCC) have been activated at the Columbia Metropolitan Airport, and over 12 agencies are working to take in patients from the Caribbean. 
 
"We're hoping to take in as many patients as they need to send," Lambardozzi

more at:

http://www.wltx.com/news/local/south-carolina-opens-up-to-carribbean-patients/478553829