AIA 94 Å (panels (a1)–(a6)), 304 Å (panels (b1)–(b6)), IRIS 1330 Å (panels (c1)–(c6)), and Hinode/SOT Ca II H (panels (d1)–(d6)) images showing the detailed evolution of two brightening events occurring in the fishbone-like structure. The dashed box outlines the FOV of panels (b1)–(d6). Iso-Gauss contours of 100 and −200 G are superposed by white and blue curves in panels (a1), (b1), and (c1).