2018 Duluth Air Show Entertains Thousands, Blue Angels Announced For 2019 [PHOTOS]2018 Duluth Air Show Entertains Thousands, Blue Angels Announced For 2019 [PHOTOS]Thousands enjoyed 2018's show featuring the US Air Force Thunderbirds, and the date was announced for the 2019 show, which will feature the US Navy Blue Angels. Nick CooperNick Cooper