One question I'd like to ask, while I'm in the right company.
Is it inherently more difficult to fly these high performance jets at exactly 100 feet than it is to fly at exactly 10,000ft? I presume it's dependent on the weather conditions and temperature gradients around terrain features, but my only experience of it is in computer games where, if you let go of the stick, it carries on more or less in a straight line regardless.
P