They were obviously assembling this new thing for the first time and the baby was indeed safe; as Molly said, was sitting on the sidewalk (sometimes he would crawl a little bit in one direction or the other). I was surprised that they were doing this out on the front lawn rather than either in the house or in their privacy-fenced back yard with patio, unless there was not enough room back there, especially if they've got furniture and other stuff there as well. Those townhouses have pretty small yards. And, yes, the grass needs to be mowed over there -- usually the landscaping people come on Tuesdays or Wednesdays, weather permitting.
I was sitting here at the computer, happened to look out the sliding glass door and saw something large and blue in front of one of the townhouses across the lake, and thought, what IS that? Got up and moved to the door for a better look, but still wasn't sure what I was seeing. I reached into the armoire and grabbed the RX10 M4 with its 24-600mm (equiv) lens (faster and quicker to grab it than to assemble the Bazooka [200-600mm] and the A7R IV when all I intended to do was to use it as a telescope of sorts. Can't find my binoculars, I've misplaced them). I zoomed to 600mm and at last realized what I was seeing. By this time the large blue part that had initially attracted my attention was in a different position, now on the ground as they progressed with the assembly. I chuckled with amusement at Dad being the one to read the instruction sheet while Mom did the work, and then the baby came into view, crawling busily along..... Irresistible! I just HAD to fire off a shot or two!