They are carrying zucchini to simulate loading missiles onto drones?
Yozzer, don't feel bad. The Belgian Airforce used the pattern for only a very brief time in the early 1990s before they abandoned it and moved to newly standardized Jigsaw uniform (~1997). Why they adopted Flecktarn is still unknown to me!
Even less known is the fact that there are two Belgian Flekctarn patterns. One is nearly identical to current Bundeswehr Flecktarn, but the other (and the more common one) is based on the 1976 Bundeswehr trials version called "Flecktarn Groß". As the name implies it is an enlarged version.