ICM.
Read the thread. It was a bit mean putting the 50lb bag of flour on the observer's seat on the way to the drop zone and then get him to throw it overboard himself. Who shouted "Green On".
Drag.
I never liked AGE or CDS where all that happened is a barrier or strop was cut and then the load only moved if there was a 5 deg nose up attitude and climb power was set. Almost as inaccurate as throwing it off the Nav seat.
Smuj.
The only frames with SCNS were SF in the days of GWl. It still didn't stop Art from cutting off a bit of Iraq near Raffah before hostilities broke out. Missed out a waypoint I think.