Panel 2: What kind of doctor is Ted, anyway? I'm not sure it's ever been made clear. I think I remember references to his giving counseling, and here he talks about enabling both births and deaths. Is he a GP? I didn't think there were any more these days. But Canada has socialized medicine, so who knows.
And meanwhile, he has kind of a mad-scientist look to him, with the eyebrows and everything. It's been implied before that this guy is maybe not the one you'd want for your family doctor, and looking at him today, I quite agree.
Panel 3: I'm noticing that John has an awful lot of hair for a guy over 50. Or is it all his?
Panel 4-5: Whiskey Tango Foxtrot? What does he mean---he feels physically ready but not mentally? Is his back bothering him, so he might have to retire, even though he doesn't want to? I can't figure out where John stands on the matter of retirement. He can afford to, but he loves dentistry, but he would love more free time, but he feels threatened by Morsel's enthusiasm, but his physical health is deteriorating, but his mind is as sharp as ever...And he's the one telling Elly, "Good, bad, make a decision"?
And what is the image in the last panel supposed to mean? Earlier panels indicate that silhouettes of pedestrians are visible through the window. So that's not John's reflection, but some guy on the sidewalk. He's got a brush cut, but he's kind of hunched over---is he old or young? John's younger self? The old man he's soon to become? Or just a random passerby? In which case, why is he in the picture at all?