What is the procedure when someone accidentally hijacks one of those trucks? If I understood correctly sometimes those trucks will not have an escort.
> When traveling, the tractor and trailer are typically escorted by three dark colored Chevrolet Suburbans, each containing four armed crew members. Additionally, all missions include heavily armed aerial support. The semi-tractor(STG) itself is heavily armored, and equipped with a Caterpillar diesel engine coupled to an automatic transmission. The cab-over tractor is a sleeper design, but instead of a bed, it has two seats containing additional armed support crew. The tractor also contains firing ports, run flat tires, and automatic sanders for slick roads.
You're not going to accidentally hijack one.
> If a SGT comes under attack, unspecified security features in the vehicles give them, according to the NNSA, the capability to "surprise and delay even the most aggressive adversary". The full range of defensive components in SGTs is unknown, but according to some media reports the vehicles are equipped with autonomous weapons systems and other "high-tech surprises" that allow them to independently engage and repel attackers even if all human crew have been killed or disabled.
For some reason I'm imagining the scene from one of the F&F movies where the side panels of a bus pull up and a bunch of revolver cannons come out. In reality it's probably more something like ejectors for smoke screens, grenade launchers for concussion/flash grenades, stuff like that since the line says "independently engage and repel attackers" not "everything with a heat signature within X meters will be mowed down by autonomous gunfire".
Lets assume they do kill off all security personnel.
Truck disables itself, axels blown off, fills itself with quick setting cement and poisonous gas. It also actives autonomous weapons to defend itself.
Truck is also heavily armored so IEDs won't reach payload.
Then, 1 minute or less air support is on the scene and bombs it and everything close by.
You would need an army as OP said to withstand air attack and disable defenses and move the now disabled truck
Assuming they somehow are able, remote monitoring both in the trucks and outside. If something duspicious or it deviates it triggers response.
Assuming that's also bought, then you have local law enforcement along military, they can signal weird behavior and would be a lot of people to buy off. It would also mean lots of people live streaming this if they switch in populated area... triggering response.
Aasuming that's also bought, you have sattelite surveilance, normal surveilance and checkpoints.
If that's also bypassed then yeah...
Moving it is another matter, tritium detectors in most ports and cities... they'd ring alarm bells pretty fast.
Using it is another matter, so many kill switches you'd have to be the president or close by to actually use it... and you could directly in that case.