For a meaningful trial they will have to be used where terrorists are going to shoot at them, otherwise it is just an academic exercise.
Three means they can be scheduled to go on a daily basis to such places as Baghdad, Kabul and Mogadishu! Will they do normal descents and approaches into such places instead of spiralling maximum rate descents over the airfield? Are they going to try it with pax, freight or empty apart from crew? What escape provision is there for the occupants if the trial fails (they get hit!) – eg ejection seats, parachutes, follow-up choppers to get them off the ground before the terrs reach them, etc? How many successful missile evasions will be needed before the system is declared ready for general use? Where will they recruit the crews from for such a realistic trial and what will the compensation package be?