[O III]88 μm fine structure lines of LARS 3 (left) and 5 (right), obtained with Herschel/PACS and SOFIA/FIFI-LS respectively. Total fluxes were derived using Gaussian fits (see Table 6). For FIFI-LS data, the atmospheric absorption, calculated using ATRAN (Lord 1992), is shown as a red curve. Spectral ranges with strong atmospheric absorption (see orange range) were masked out for the fitting process. The zero-velocity (red vertical line) is related to the H I systemic velocity from Pardy et al. (2014).