"But like any energy, if you have multiple sources of that radiation, you add them up.
If you have twice as many light bulbs, it's twice as bright."
Whartung, indeed, the point you make about adding up the rads from the various sources (shots) of radiation is exactly what I was driving at in my initial posting. Even with protective battledress/combat armor/HEV suits, if multiple fusion weapons are firing (or if the same weapon fires multiple times) in the same firefight, then that location will become so irradiated as to overcome the protection of even this armor. So for infantry to use the FGMP, unless there is only one firing very few times, is suicidal. Mkes mor sense for them to use the PGMP, gauss rifles, heavy laser rifles, and tactical AT missle launchers.