[buwaya]

The US knew that GPS could be jammed for over 20 years. That’s why newer systems like ATACMS and GMLRS (the HIMARS munitions) were made with inertial nav as well.

SDB and JDAM are older tech.

Quite what effect modern GPS jamming could have was going to be unknown until it was actually tried on a large scale.

[BobL]

“The US knew that GPS could be jammed for over 20 years. That’s why newer systems like ATACMS and GMLRS (the HIMARS munitions) were made with inertial nav as well.”

Then why are we reading this article?