GIAA and Lotte Agreement Mitigates Impact of Construction on Airport concessions. As reported by GIAA Executive Manager Tom Ada at the Board of Directors Meeting on January 31, 2019, the Antonio B. Won Pat International Airport Authority, Guam ("GIAA") has taken steps to mitigate the impact of the ongoing construction of the International Arrivals Corridor on the revenue and operations of Lotte Duty Free Guam ("Lotte"), which operates the retail concession at the Airport.