The USAF ran an RC-135W Rivet Joint aircraft mission off the coast of Venezuela yesterday. The seven-hour mission was flown from their temp base in Puerto Rico. RC-135W aircraft #62-4130 Mode-S hex code AE01D1 used the callsign Grog 41 for the mission. Just another area of the world to keep an eye on.
Thanks to Aircraft Spots on twitter for this update.