Density map of red SPIRE sources, with the Planck red-excess contours overlaid in purple (at 50, 62.5, 75, 87.5% of the highest value). The dashed white circle represents the 1.4′ radius circle masked in the L16 Cosmos catalog due to a bright star. The Planck position is marked with a thick purple plus sign, while the position where the density of red SPIRE sources peaks is marked with a thick red plus sign. The other symbols represent 86 SPIRE sources with colors and redshifts consistent with z ∼ 2.16 (circles are sources with a unique VLA and/or MIPS[24 μm] counterpart, diamonds are sources with multiple VLA counterparts): magenta if 2.15 ≤ z_spec < 2.20 (4); green if z_phot > 1.4 and red (40), cyan if no redshift is available and red (42). We note that about 17 (40%) of the sources with no redshift are likely at z < 1.4; see text for more details. A yellow cross is overplotted on sources with 2.25° < δ < 2.35° and with z_spec or with a redshift estimate between 1.8 and 2.5 (11 sources). Such a redshift estimate was obtained by requiring the observed radio flux to be reproduced assuming the radio-FIR correlation.