GIVEN THE IMMENSE SACRIFICES of our military men and women over the last 14 years, it is customary for civilians, both prominent and ordinary, to say “thank you for your service.” It is fitting and proper that we should do so. The sacrifices they have made, in blood, pain and sanity, ought to entitle them to our undying gratitude.

It has occurred to me lately, however, that there are those who serve us closer to home, and that they, too, deserve our thanks.

Part of the reason for the realization was a recent conversation I had with a passenger in my car, who I picked up as part of my new gig being a driver for one of the car-sharing services.