A lot of the FPV (first person view) small drones from the video’s are 1-way, even the ones that are slightly more fancy with the dropping mechanism might not go back to base for rearm and instead get ditched in a third location for potential reuse later. This is because there is a risk of an enemy drone following your fpv drone home, giving away your location. This happened to the US in the middle east not long ago, I’ll update if I find a news article about it.