Stacked histogram showing the 1 yr forecast of spectroscopically followed near-peak (±5 days) volume-limited SNe Ia per redshift. The current DESI Transients Survey program, where spare fibers are assigned to live transients if they happen to fall into a planned pointing (blue), would obtain around 880 SNe Ia. When allowing a transient to actively trigger any remaining tile pointing, 2300 SNe Ia can be followed up near peak (orange). This does not impact the completion of DESI’s main survey as SN candidates only reorder the observing queue. This is effectively a two-tier survey: We have a wide tier that can cover a larger total area with shorter exposure times (bright tiles, z < 0.15), and a deep tier that covers a smaller total area with longer exposure times (dark tiles, z < 0.3).