short-range rescue
21Distress radiobeacon — PLB redirects here. For other uses, see PLB (disambiguation). Emergency position indicating radio beacons or EPIRBs Distress radio beacons, also known as emergency beacons, ELT or EPIRB, are tracking transmitters which aid in the detection and… …
22Global Maritime Distress Safety System — The Global Maritime Distress and Safety System (GMDSS) is an internationally agreed upon set of safety procedures, types of equipment, and communication protocols used to increase safety and make it easier to rescue distressed ships, boats and… …
23Fire apparatus — A fire apparatus, fire engine, fire truck, or fire appliance is a vehicle designed to assist in fighting fires, by transporting firefighters to the scene, and providing them with access, water or other equipment. In some areas, the terms fire… …
24Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
25United States Coast Guard — portal Active 4 August 1790–present …
26Republic of China Air Force — 中華民國空軍 Active 1920–present Country  Republic of China (Taiwan) …
27Unmanned aerial vehicle — UAV redirects here. For the entertainment company, see UAV Corp.. For the veterans organization, see Ukrainian American Veterans. A group photo of aerial demonstrators at the 2005 Naval Unmanned Aerial Vehicle Air Demo. An unmanned aerial vehicle …
28Signals intelligence in modern history — This article is a subset article of the article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with signals intelligence in the… …
29History of the Luftwaffe 1933 - 1945 — The German Luftwaffe was one of the strongest, doctrinally advanced, and battle experienced air forces in the world when World War II started in Europe in September 1939. Officially unveiled in 1935, in violation of the Treaty of Versailles, its… …
30Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
