Del. Code tit. 2 § 912
Every airport and other air navigation facility controlled and operated by any political subdivision, or jointly controlled and operated pursuant to this chapter, shall, subject to federal and state laws, rules and regulations, be under the exclusive jurisdiction and control of the political subdivision or subdivisions controlling and operating it and no other political subdivision in which such airport or air navigation facility may be located shall have any police jurisdiction of the same or any authority to charge or exact any license fees or occupation taxes for the operations thereon. Such political subdivision or subdivisions shall have concurrent jurisdiction over the adjacent territory described in subdivision (2) of § 909 of this title.
2 Del. C. § 912