Finally got to sit and watch the entire episode (3rd attempt, and said to hell with the phone ringing and the door being on)
Is it wrong, that the first thought that occurred to me when Kate she said was Science running UNIT, that it could've been Liz Shaw? I really liked the Brig's daughter, and thought that was a great addition to the Episode.
Very well put Brent, it definitely is a NuWho thing the Doctor gives much thought to not wanting to lose Companions, or it mattering to the Companions when they part (Sarah Jane and Jo Grant-Jones didn't get to voice their disappointment with being completely dumped for so many years until NuWho and SJA) and it's definitely good for Drama and closure.
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?