Page 118-119 of the
FAA Reauthorization Act of 2018
SEC. 353. EMERGENCY EXEMPTION PROCESS.
(a) SENSE OF CONGRESS.—It is the sense of Congress that the use of unmanned aircraft systems by civil and public operators— (1) is an increasingly important tool in response to a catas-
trophe, disaster, or other emergency;
(2) helps facilitate emergency response operations, such
as firefighting and
search and rescue; and
(3) helps facilitate post-catastrophic response operations,
such as utility and infrastructure restoration efforts and the safe and prompt processing, adjustment, and payment of insur- ance claims.
(b) UPDATES.—The Administrator shall, as necessary, update
and improve the Special Government Interest process described
This doesn’t say anything concrete but I think it explains the the “intention” of the Law which to my “non-lawyer” eyes is that “Congress’ sense” of this matter is that you SHOULD be allowed to fly in situation described in the OP but they don’t really know the best way to write that into law and want the FAA to let them know if it figures out a way to do it or if it has a good reason why they shouldn’t.