Follow the thermal target
Follow one Puerto Rico recording through competing reconstructions. Start with the moving background and the changing thermal contrast.
What to keep in mind
Four stills come from this same recording. The other case images are report pages. A loss of contrast is not itself evidence of water entry, and a two-part silhouette does not prove physical splitting.
Keep the background
In the full recording, which terrain features can you follow while the target and camera move? Mark an observation before proposing a ground-relative path.
Compare the silhouette
What visibly changes between counters 8421 and 8450? Separate the appearance of two dark forms from an explanation of how they arose.
Trace the contrast
Compare the land-background frame with the late frame. Which parts of your interpretation depend on displayed grey levels, and which would need range or raw sensor data?