No, they added metal plates. It's totally safe
That is how the book Live Free or Die by John Ringo starts.
The balls are *not* magnetic for that reason
I am in the Air Force, and trust me on this; you do *NOT* want QuikClot used on your person unless it is a life threating situation. It is a chemical burning agent that is being inserted into your skin, as well as the the issues of the clotting agent travling through your blood stream there is a significant threat of the patient slipping into shock. We are taught that the use of QuikClot is the last option to be used only if your other methods of stopping bloodflow did not work. To put that in perspective, you are only to use QuikClot only after you use the option that will require removial of the limb (should the injury be on a limb) once the person arrives at a treatment facility.