21. Since the light helicopters fly low, it's not unusual to lose radio or radar contact . 22. That evening, she surfaced once again and soon made radar contact with a good-sized target. 23. The four had been heading from Japan to Alaska when radar contact was lost Sunday. 24. Shortly after midnight on 21 November, the submarine made radar contact with the fleet at. 25. While no definitive submarine attacks were made, there were many " suspicious " radar contacts . 26. On 31 January, the boat made another radar contact on two cargo ships under escort. 27. The reported contrail was never verified by visual or radar contact , the Pentagon statement said. 28. Radar contact with the plane was lost Tuesday afternoon.29. Different geometric shapes and colors are now used to identify different types of radar contacts . 30. At 4 : 21 p . m ., radar contact with the MD-83 was lost.
