[ { "key": "h1", "name": "Hughes H-1", "lat": 38.8879, "lng": -77.02085, "level": "1" }, { "key": "voyager", "name": "Rutan Voyager", "lat": 38.8880, "lng": -77.0199, "level": "1" }, { "key": "spitfire", "name": "Supermarine Spitfire", "lat": 38.8879, "lng": -77.0208, "level": "2" }, { "key": "x29", "name": "Grumman X-29", "lat": 38.88845, "lng": -77.01875, "level": "2" } ]
