The seven [C ii] spectra observed by upGREAT (black) and the central [N ii] spectrum (red) observed by GREAT towards (l, b) = (30.̊0, 0.̊0). While the overall shapes of the [C ii] lines across the Scutum spiral arm (V_lsr = 60 to 130 km s^-1) within each pixel are similar, the small differences among them demonstrate that there is structure due to individual cloud components. The [N ii] emission in the central pixel is detected across the entire velocity range of [C ii] in the Scutum arm.