The department may cooperate with any agency or department of the United States in the acquisition, construction, improvement, maintenance, and operation of airports and aviation facilities in this state. Source: SDC 1939, § 2.0108 as added by SL 1945, ch 2 ; SL 1949, ch 2 , § 5; SL 1997, ch 16 , § 7; SL 2014, ch 222 , § 22; SL 2018, ch 269 , § 6; SL 2019, ch 203 , § 8.