X user @OrlvndoA reported lots of movement in the Caribbean, with some activity not traceable, in a post shared between 3:45 AM and 4:15 AM UTC on December 28, 2025, according to the post at https://x.com/OrlvndoA/status/2005124902463193581. This update represents the sole new observation within the 29-minute reporting window and follows a U.S. Air Force KC-135 Stratotanker takeoff from MacDill Air Force Base in Tampa earlier between 2:16 AM and 3:45 AM UTC, supporting uplink SATCOM assets, as reported by @HHunternight and corroborated by aviation tracking accounts including @AirAssets and @Arr3ch0. The KC-135 activity aligns with prior movements, such as the transponder activation on U.S. Air Force E-11A BACN aircraft 22-9047 while on the ground in San Juan, Puerto Rico, earlier on December 28, according to @Arr3ch0.