By Sarina Houston. Updated March 01, 2015. Class D airspace surrounds airports that have an operating air traffic control tower, but do not have radar services (or at least are not required to.) Airspace surrounding a Class D airport is only classified as a Class D airport when the tower is in operation.
Page Content. DVIDS is a state-of-the-art, 24/7 operation that provides a timely, accurate and reliable connection between the media around the world and the military serving in Iraq, Afghanistan, Kuwait, Qatar and Bahrain.
Dimethyl disulfide. Dimethyl disulfide (DMDS) is an organic chemical compound with the molecular formula CH3SSCH3 which is the simplest disulfide. It is a flammable liquid with an unpleasant, garlic-like odor.