Correct. Also, for Squad oriented missions, where party crashers take up valuable positions (you know, the missions that have certain number of A/C for designated missions, etc)
I had one mission where the two goon positions filled up before any of the 'intended' guys got aboard (landing their sorties),well...I let it go, once enroute to the target, I had two goon drivers asking how to drop troops! Needless to say, even with instruction, both pilots failed the mission miserably, after we annilated the field in no fewer than 11 seconds (a record!)