After the last update (10/08/09) I noticed when lauching a Lancaster one of the DRONE planes launched in the opposite direction as soon as Lancaster went to the runway.
If runway NE was selected the pilot's plane and one drone faced correctly and the other drone immediately launched to SE, gain a little altitude and exploded (causing 1 death prior to starting engines of Lancasters).

Load out at the time = 25% fuel / 14 1000 lbs bombs