The Aircrew insignia is issued to enlisted personnel trained to operate equipment aboard airborne aircraft. Its presence negatively impacts air quality by adding to the count of airborne particulates. The eyes may water in response to dry air, dust, or airborne allergens. These may result from contact with streams or exposure to airborne toxins and dust. An electrostatic fluid accelerator propels airflow by inducing motion in airborne charged particles. This distance extends much further in airborne and space radar. These forces included tank, artillery and airborne forces. Airborne Interception radar (AI) was unreliable. Gangs of air pirates formed in turn to plunder airborne commerce. Lidar applications can be divided into airborne and terrestrial types. See the article on Airborne particulate radioactivity monitoring for more information. Parachute Battalion as part of the British 6th Airborne Division. They were wearing 101st Airborne Division patches. Five battalions of the Parachute Regiment in the 6th Airborne Division took part. Modern militaries utilise parachuting for the deployment of airborne forces and supplies.