"Retired" means you can do what you really want to do, not what brings in a basic paycheck. I put in about a 40 hr. week this week in my volunteer job. But, I got to be there when they lowered the Spirit of St. Louis to the floor of the National Air & Space Museum, to ride along in Big Blue while they transported the Horten V3
from Silver Hill to Udvar-Hazy, and just finished doing the time-lapse videos of both operations. Drives my wife crazy that I don't want to take time off (aside from 3 mo. in the summer to beat the triple digit humidity and temperature) from it and go traveling. But then, she wants to travel in the winter, when 1) it's liveable here and 2) I'm usually in the middle of sometning interesting (see above).
Photos I take for the Smithsonian are the Smithsonian's. Don't ask me to post them here unless they've made them publicly available. At least one's been published, but it's too big (gigapixels) to post here. "One Last Look" in the August 2014 issue of Smithsonian Air & Space - Jimmy Doolittle's tablecloth, which has virtually a "Who's Who" from 1929 through the 1950's. Anyone who dined with them signed it; Joe Doolittle (his wife; long story) then embroidered the names. I photographed the whole thing scaled to a 1:1 at 300 dpi; worked out to 96 photos, then made a panorama of it. You can see the threads.