Del. Code tit. 20, § 3208

If a person or entity holds a license, certificate or other permit issued by a participating political subdivision or for the State of Delaware evidencing qualification in a professional, mechanical or other skill and the assistance of that person or entity is requested by a participating political subdivision, the person or entity shall be deemed to be licensed, certified or permitted in the political subdivision requesting assistance for the duration of the declared emergency or authorized drills or exercises and subject to any limitations and conditions the chief executive of the participating political subdivision receiving the assistance may prescribe by executive order or otherwise.