Breaking down the recent Video from US Southern Command.

By. Scott Jackson

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10.05.2025

On October the 3rd, US Southern Command released footage from US operations ongoing in the Caribbean. The video shows the loading of a U.S. Marine F-35B Lightning II with live munitions at the now reactivated Roosevelt Road Naval Station.

This aircraft, if it was just one jet, it’s not clear in the video, was outfitted with a mixture of air-to-ground and air-to-air weapons. My info is coming from publicly available information on the weapons systems and some of my own knowledge of this topic from years of research. Any mistakes or opinions are,as always, my own. The first clip shows the loading of an AIM-9X Sidewinder. The AIM-9X is an inferred guided, proximity fused weapon. 

Variations of the Sidewinder started life as the primary weapon of many early Cold War era jets alongside their main cannons. This is not that Sidewinder, it is so updated and advanced it’s hard to even think of this as the same missile. The original AIM-9 Sidewinder used in Vietnam had an abysmal success rate that averaged somewhere around 9%. So 1 out of 10 would hit their targets. While the original weapon could only heat-track a target aircraft’s exhaust, this weapon is capable of detecting the heat from the friction of the target aircraft going through the sky making shots at the front or side of the target a possibility. A thrust vectoring engine on the AIM-9X gives it incredible maneuverability. The publicly available information puts the range at somewhere around 10-15 miles depending on some factors(Altitude-speed etc.)that can shorten or extend that range. This is not your grandfather’s Sidewinder.

Moving on we get a quick look at one that’s probably familiar to you (if not by look, then by name) the GBU-54(V)/B LJDAM (Laser Joint Direct Attack Munition).This is the laser guided version of a pretty standard MK 82 500 pound air-to-ground bomb with the added bolt-on JDAM guidance kit giving it some pretty spectacular accuracy. 

JDAM is like an aftermarket part for a bomb turning it into a GPS guided precision weapon.We don’t talk enough about the effect that the JDAM and other guidance systems have had on tactical bombing, long gone are the days you have to drop 12 bombs to hit one target. If the target is a house, a decent pilot can hit the house 90% of the time, a great pilot and a bit of laser guidance can put a JDAM through the window. 

The last weapon shown is the AIM-120 AMRAAM-C/D (Advanced Medium Range Air-To-Air Missile) or, sometimes called Slammers after their first 3 shots resulted in 3 enemy takedowns in Iraq and Bosnia.The C/D is the model number for the missile, I’ve added both models because they showed two different missile models in the USSOCOM video. The AIM-120 is a BVR (Beyond Visible Range) with active radar-homing capable of striking targets at extreme ranges. Publicly available data puts the range of the AIM-120 listed at around 80 miles. The range numbers can be a little deceiving, you have to take into account that these numbers are based on any number of specific conditions for the enemy and the weapons platform. For a missile like the AIM-120 D model, while it will travel over 100 miles, its effective range is closer to 60-70 miles. 

None of these weapons are rare, two of them, the SIdewinder and AMRAAM you will find on almost every fighter in the air fleet and the laser JDAM has been used heavily since the 90’s. I’m a little uncertain on exactly how many weapons this plane in the video launched with as the F-35 in its stealth mode can only hold so many weapons, and the B version has a smaller weapons bay than the others because of the lift fan.  The two weapons bays can hold two AMRAAM’s each. I’m guessing here but maybe one JDAM and a sidewinder on one side and then the two AMRAAMS on the other. 

The F-35 is technically capable of carrying more weapons on outside hard points, however this harms the stealth of the aircraft, giving it a larger radar cross section, or RCS. The idea was to use stealth mode during the opening days of a conflict and then to switch to what the manufacturer, Lockheed Martin calls “Beast mode” that the F-35B can be once air dominance has been achieved.