RETAC Quarterly Meeting Dec 11-12, 2019 March 11-12, 2020 – Gateway June 3-4, 2020 Sep 2-3, 2020 Dec 9-10, 2020 March 3-4, 2021 June 2-3, 2021 Sep 1-2, 2021 Dec 8-9, 2021 March 2-3, 2022 June 1-2, 2022 Sep 7-8, 2022 Dec 7-8, 2022