EUV images at 94 Å taken by SDO/AIA (left) and GOES/SUVI (right) on 2024 July 16 at ∼14 UT (top panels), ∼17 UT (middle panels), and ∼21 UT (bottom panels), approximately corresponding to the start, middle, and end times of the > 100 MeV γ-ray emission (see Figure 2c). The red arrows indicate the system of giant loops persisting over the source region for the entire LDGRF duration.