21. The restrictions give the pilot time to find a landing zone . 22. They also identify landing zones for troops and drop zones for parachute-borne supplies. 23. Landing zones require stabilization of dust and snow to avoid blinding helicopter pilots.24. Three broad ditches lay between the landing zone and the fort. 25. From that landing zone , they moved northeast and relieved the two besieged trenchworks. 26. Troops then assault a beach and landing zone while this live fire occurs. 27. The Argentine base was flooded except for a helicopter landing zone on higher ground. 28. :A strong wind blows a parachuting skydiver off course from his intended landing zone . 29. Blackhawk and Chinook helicopters began ferrying additional troops into the landing zone , Gatlin said. 30. The Argentinean base was flooded except for a helicopter landing zone on higher ground.
