The Dash 7s are aging aircraft, as you said. That is why we have procured a very robust spare parts inventory to ensure that we can keep them operational for as long as possible.
The surveillance program is augmented by the Dash 8 that flies out of Vancouver for the western Arctic. There are other Dash 8s positioned in Ottawa and Moncton that can be mobilized, if required, to ensure that we have adequate coverage for surveillance.
In the longer term, we are working with the Coast Guard on a plan to replace them—what the right aircraft and right capital asset are to replace them. In the meantime, the use of the remotely piloted aircraft is one way of augmenting the air capacity that we have, but the longer-term solution will be the result of the study we are doing with the Coast Guard.