Magnification of the two largest He I D₃ emission kernels in the data at three different time steps t_pre, t_pre + 30 s and t_peak. An image in the He I D₃ line core an at a redshifted wavelength point of Δλ = 890 mÅ is shown. Co-aligned SDO 1700 Å images are shown as well, with the original pixel scale preserved. The red plus marks in panels b, e, and h correspond to the profiles displayed in Fig. 9. The solid line contours in the images at the He I D₃ red wing show an intensity threshold in that image. The same contours are overplotted as dashed lines in the He I D₃ line core images and in panels h and q to demonstrate a time and space lag.