Up to 21,000 feet, in the case of the military surveillance vehicles, but only 10,000 feet for the commercial vehicles.
On May 10th, 2012. See this statement in context.
On May 10th, 2012. See this statement in context.
May 10th, 2012 / 10:20 a.m.
Vice-President, Fleets and Engineering, Discovery Air Innovations
Up to 21,000 feet, in the case of the military surveillance vehicles, but only 10,000 feet for the commercial vehicles.
See context to find out what was said next.