Because the Airco DH-4, Standard J-1 and Curtiss JN-4 Jenny were such popular trainers during and after WWI (keep in mind, there were almost 7,000 Jennys built!), there are a lot of photos of these aircraft still existing that fall into this category. The quantity of photos taken of trainees with their planes, plus the poor quality and lack of information, means that unless there's something special, many of these nearly century old photographs are shunned by collectors and assigned little value.
I have no clue as to where this was shot, or the circumstances surrounding the scene, but it appears that the small group of men are standing around two who are knelt down, possibly over an open tool box.
The second set of photos, all three of which came from the same collection and appear to be of the same plane on the same day, show several Army trainees and a civilian standing with a JN-4 Jenny. Two of the photos are in fairly decent condition, but the third has become so dark with age that it is difficult to make out much with the naked eye. Again, with over-processing of contrast along with tone mapping can bring out a lot, though at a price.
The top view shows the photo as it looks to the eye, the bottom
shows some of the additional detail discernable with overprocessing.