SATCOM flight plan A0648 for U.S. Air Force RC-135V/W aircraft, hex AE01C3 and registration 64-14848, from KHST to the Caribbean and return was received on December 30, 2025, at 16:40 local time, according to @HHunternight on X at https://x.com/HHunternight/status/2006136337787727947, reported in the past 29 minutes. The flight plan details a mission originating and returning to KHST, Joint Base Pearl Harbor-Hickam in Honolulu, as posted by @HHunternight during the reporting window from 10:46 PM to 11:15 PM UTC. This development aligns with U.S. Southern Command's #OpSouthernSpear operations in the Caribbean, following U.S. Stratotankers at Santo Domingo's AILA airport beginning early departure preparations between 9:46 PM and 10:46 PM UTC, according to @Elconde7th and multiple X accounts including @r4streando and @AirAssets. Earlier activities included a U.S. Air Force MC-130J en route to Puerto Rico and a U.S. Navy C-40 Clipper departure from San Juan International Airport, as reported by @FrozenFrequency on X, amid U.S. operations directed by Secretary of War Pete Hegseth.
