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function cvt2utm
	global mission
utmStruct = [];
for i=1:length(mission),
	[mission{i},utms] = bgeo2utm(mission{i});
	if ~isempty(utms), utmStruct = utms; end
end
if ~isempty(utmStruct),
	mission{1}.utmzone = [int2str(utmStruct.number) utmStruct.letter];
end