With everyone back we would be 320ish fat summer of 2021 in both fleets. 200ish of those are Airbus overages. That leaves us with about a surplus of 120ish Boeing FO’s for this summer. Based on your seniority and duration of your individual leaves, you could probably work backwards and see when your sand runs out of the hour glass. I would put the empty glass at 3/22 737FO and 5/22 320/FO.