I had given the TF orders to move to an area within their normal cruise speed range. Both TFs have plenty of endurance left (it's the start of the scenario).
Do TF automatically reset to return to their starting base once they reach an assigned destination? That's the only explanation I can come up with for this behavior. If I'm overlooking something, or have forgotten to make a preferences change, please make a suggestion.
And be gentle, I only broke the wrapper on this game two hours ago!
