Seems I've just spent the past few days (though not really days, just small bunches of time training the early, quick skills whilst I've been online) training up Energy Grid Upgrades for eventually moving into my Covert Ops skill book and training into the Covert Ops Ships.
Except the skill required is Electronics Upgrades.
Oh well, at least it wasn't days wasted, rather hours, but still, its an annoyance.
And I suppose I eventually need Energy Grid Upgrades either way for my Tech 2 Power Diagnostic Units I have planned for my Raven, so its not all bad.
Thirteen Years of This in Azeroth
4 hours ago