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Sound sample ⓘ An 1860s-era siren. [2] A siren is a loud noise-making device. There are two general types: mechanical and electronic. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines.
The Advanced Combat Helmet (ACH) is the United States Army's current combat helmet, used since the early 2000s. It was developed by the United States Army Soldier Systems Center , [ 2 ] the U.S. Army Special Operations Command , [ 3 ] and the U.S. Army Research Laboratory [ 4 ] to be the next generation of protective combat helmets for use by ...
A civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger. Initially designed to warn city dwellers of air raids (air-raid sirens) during World War II, they were later used to warn of nuclear attack and natural disasters, such as tornadoes (tornado sirens).
A Federal Signal Modulator siren in Bay Head, New Jersey.. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster.
Most people enter military service “with the fundamental sense that they are good people and that they are doing this for good purposes, on the side of freedom and country and God,” said Dr. Wayne Jonas, a military physician for 24 years and president and CEO of the Samueli Institute, a non-profit health research organization.
Roblox is an online gaming platform where game developers from within the community create digital experiences, or games, for all users to participate in, says Higgins.
Cher got a glimpse of Phil Spector’s dark side.. Years before the music producer shot and killed Lana Clarkson at his home in 2003 — for which he was sentenced to 19 years to life in prison ...
U.S. Army's 25th Infantry Division soldiers wearing the IHPS during the 2019–20 attack on the U.S. embassy in Baghdad.. The IHPS helmet began development as a replacement for the Advanced Combat Helmets and Enhanced Combat Helmets in 2013 [2] under the U.S. Army's Soldier Protection System program, which is intended to improve soldier protection and performance while reducing weight of a ...