Pontious
I did say I was a non aviation person and asked the question in the spirit of being educated.
I have been and am very grateful. You and others have pointed out that the 'altitude' is not a problem at BRS in these circumstances. I thought I had read or been told it was. Clearly I was mistaken but had I not mentioned it no-one would have corrected me and I would continue to be under a misapprehension.
Once again, thank you all for taking the trouble to explain.