The Ghosts are supposed to be the elite of the elite.
Funding them with such technology may not be cheap per soldier, but
having and outfit like that does help.
Imagine that, ur fire control orders are all digital.
I've thought of such a system like that before. Basically, we'd
have a advanced visor/helmet that can paint a target with a beam of
non-visible laser. The aimpoint would be something fixed at a
natural centre.
The men would have receptors, that would be able to see the beam,
and the visor would indicate which direction to turn the head in
order to have the "painted" target in view.
Now if u can add a mini-battle management system to it, a small
computer that stores the range & heading of the system, u'd be
able to "store" multiple targets, and engage them according to the
sect comd's prioritization.