National Geographic : 1996 Oct
MULTIPLE HITS Darts stab the desert in Cabeza Prieta NWR, where towed aerial targets fell during live-fire, air to-air combat training. Jet noise may stress wildlife, but military overflights are still allowed. Across a Louisiana marsh a shipping channel ushers tankers and chemical carriers through Sabine NWR, prime wintering ground for 300,000 snow geese and ducks. If response to an oil spill came quickly enough, gates could be closed to protect part of the refuge.