The F-84G photo depicts (I think) Greek pilots undergoing their conversion course in the USA. The picture came from the NATO archives.
The other photos are of Greek F-84F's from 340 Mira about to take-off. One is a detail shot of the first plane. The F-84F photos also come from the NATO archives (and were used, via Internet, for the making of the decal sheet of the recent Airfix re-issue).