Yes, absolutely. When the Silent Falcon aircraft flies a hundred feet above a populated area or any area that is regulated, it has virtually no sound. So, the aspect of avoidance of any type of aircraft noise is clearly not a.... It would not happen.
The only types of variances that you would have, as drones become more popular in Canada and people are flying them around disaster areas, forest fires and so on.... They also come off airports, and they can do a lot of damage to aircraft on the ground as well as aircraft taking off.
To return to the question, the sounds from these are virtually zero, from any distance, during takeoff, in the air and in the approach. So if these are being utilized under emergency management guidelines for providing search and rescue or any other efforts, you're not talking about an extended period of sound. RPAS can fly for five hours, and with a current agreement with DARPA, we're looking at developing them so they can stay up indefinitely.
The importance of the sound interruption is going to be a key model with what we're doing.