{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This layer is to be used in the military & compatibility portion of the Maryland SmartDG tool.", "description": "

Joint Base Andrews conducts low-level helicopter training operations across areas in southern Maryland and northern Maryland including along the Potomac River.<\/SPAN><\/P>

There are three separate low-level flight areas associated with training at NAS Patuxent River, two of which are in Maryland \u2013 East Helicopter Operating Area and West Helicopter Operating Area. Both low-level flight areas cover a broad area of land across Calvert County, Dorchester County, St. Mary\u2019s County, and Wicomico County in which NAS Patuxent River conducts low-level flight training operations with rotary-wing and some fixedwing aircraft.<\/SPAN><\/P>

Some military flight training is conducted at altitudes below 10,000 feet above mean sea level, and sometimes even below 200 feet AGL. For example, nap-of-the-earth training exercises include aircraft flying just above ground level or tree line using terrain-following sensors to avoid radar detection. Due to the low altitudes and speeds of the aircraft, these training missions are conducted within designed low-level flight areas to avoid collisions with civilian aircraft. However, the development of tall structures can interfere with and create hazards for aircraft conducting low-level flight training.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This layer is to be used in the military & compatibility portion of the Maryland SmartDG tool.", "title": "Maryland Helicopter_Operations", "tags": [ "SmartDG", "Maryland Energy", "MD iMap", "Maryland", "Vector", "Cached", "WMS", "WFS", "KML" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "Joint Base Andrews, NAS Patuxent River, 2020.", "licenseInfo": "" }