Lack of road, particularly in the mountains. Think (more). Bill on Nov 17, 2001, 5:18 PMOkay, I can see helicopters, but not horses <nt>. Richard on Nov 17, 2001, 6:29 PMHelo's not very effective in the mountains (more). James K on Nov 18, 2001, 1:41 AMHelo problems in the Hindu Kush .... OCD on Nov 18, 2001, 3:35 AM