It's being pointed out that the wording as it exists does allow flexibility. If it's hard this way, then we have no choice but to dedicate the resources to such investigations even if they don't want to participate or we don't want to participate, for whatever reason; whereas, the wording that exists does allow flexibility and give and take between the Transportation Safety Board and the AIA investigation.
On March 4th, 2014. See this statement in context.