There's a junction box with a 14/2 without ground coming directly from the panel. Leaving this box is a 14/2 without ground and a 14/2 with ground. The ground wire is attached to the junction box but of course it isn't actually grounded.
Can you run a single insulated ground wire from the panel to the junction box to provide a ground for the 14/2 with ground that leaves the box.
The 14/2 without ground that leaves the junction box goes to GFCI receptacle as the first receptacle on that run. That's fine for now. However, the 14/2 with ground goes to some receptacles which should have an equipment ground. My friend would like to add that ground in the easiest manner possible, which is to simply add a ground wire from the panel the junction box. Can he do that?