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While an early form of mechanical rangekeeper, it does illustrate all the basic principles. [2] The rangekeepers of other nations used similar algorithms for computing gun angles, but often differed dramatically in their operational use. [3] In addition to long range gunnery, the launching of torpedoes also requires a rangekeeping-like function ...
F-4-1 was based on the P-38E, ninety-nine built with initial delivery March 1942. Four nose-mounted K-17 cameras. Most were used for training in the United States; nine of these aircraft deployed to the United Kingdom as part of the 5th Photographic Squadron in mid-1942. [31] F-4A-1 based on P-38F-1-LO, twenty built. [32]
A SKYWARN Training presentation at Peterson Air Force Base. The NWS sponsors Skywarn training sessions in the US. These sessions usually occupy two hours, and focus on hazard identification and communication along with spotter strategies and safety. NWS recommends attendance at refresher courses every two years. [3]
In addition, there were a number of spotter stations set up and manned by the New Guinea Volunteer Rifles, as well as a few civilian stations reporting to ANGAU. [4] In March the crew of a shot-down Japanese bomber were engaged from an observation post at Gona by a team of spotters, resulting in the killing of the first Japanese in Papua by ...
The answer was found in calling on civilian volunteers to act as airplane spotters. With the help of the American Legion, volunteers were organized in May 1941 into the Aircraft Warning Service, the civilian arm of the Army's Ground Observer Corps.
The Spotter Network (SN) is a system that utilizes storm spotter and chaser reports of location and severe weather in a centralized framework for use by coordinators such as emergency managers, Skywarn and related spotter organizations, and the National Weather Service.
The US National Weather Service developed an organized storm spotter training system starting in the 1970's. Meteorologist Alan Moller played a significant role in the development of the effort. He believed that storm spotters are a vital part of the Integrated Warning System since they provide "ground truth verification" for forecasters.
Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1928 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper Carlos Hathcock during the Vietnam War.