21st Special Operations Squadron

The 21st Special Operations Squadron is a unit within the 352d Special Operations Group (352 SOG), United States Air Force, United States European Command, and was based at Royal Air Force base RAF Mildenhall in Suffolk, eastern England.

Mission

The 21st Special Operations Squadron, which fell under the 352nd Special Operations Group, RAF Mildenhall, UK, was inactivated on 31 October 2007 with the inactivation ceremony taking place at RAF Mildenhall, UK on 9 October temporarily ending the Air Force Special Operations vertical lift mission in Europe.

The inactivation of the Dust Devils was the first step in preparation for the arrival of the CV-22 tilt-rotor aircraft.

The 21st Special Operations Squadron's mission consisted of day or night, all-weather, low-level penetration of denied territory to provide infiltration, exfiltration, resupply, or fire support for elite air, ground, and naval forces. The unique capabilities of the MH-53J permitted the squadron to operate from unprepared landing zones.

8th Special Operations Squadron

The 8th Special Operations Squadron (8 SOS) is a squadron of the United States Air Force. It is assigned to the 1st Special Operations Wing, Air Force Special Operations Command, stationed at Hurlburt Field, Florida. The squadron is equipped with the CV-22 Osprey in support of special operations.

The 8 SOS is one of the oldest units in the United States Air Force, being organized as the 8th Aero Squadron on 21 June 1917 at Kelly Field, Texas. The squadron deployed to France and fought on the Western Front during World War I, equipped with United States-built Dayton-Wright DH-4, being used as reconnaissance aircraft.

During World War II, the squadron fought in the Southwest Pacific Area with Fifth Air Force as an attack and later B-25 Mitchell medium bomber squadron. During the Cold War, it fought in the Korean War with B-26 Invader medium bombers and Vietnam War as a B-57 Canberra medium bomber and later as an Air Commando squadron with A-37 Dragonfly counter-insurgency aircraft.

5 Seconds of Summer

5 Seconds of Summer (commonly abbreviated as 5SOS) are an Australian rock band from Sydney that formed in 2011. The group were originally YouTube celebrities, posting videos of themselves covering songs from various artists during 2011 and early 2012. They rose to international fame while touring with One Direction on the Take Me Home Tour.

The group have been referred to as a boy band in the media, though the members reject this description. In early 2014, the band released "She Looks So Perfect" worldwide as its debut single, which topped the charts in Australia, New Zealand, Ireland and the United Kingdom. The self-titled debut studio album was released in June 2014, which peaked #1 in 11 countries, and followed by a live album titled LiveSOS. The band released their second album Sounds Good Feels Good in 2015.

History

2011–12: Origin and debut

5 Seconds of Summer began in 2011 when Luke Hemmings, Michael Clifford and Calum Hood, who all attended Norwest Christian College, started posting videos of themselves performing covers of popular songs together on Hemmings' YouTube channel. Hemmings' first video, a cover of Mike Posner's "Please Don't Go", was posted on 3 February 2011. Their cover of Chris Brown's "Next to You" received over 600,000 hits. In December 2011, they were joined by drummer Ashton Irwin, and the four-man line up was completed.

Greeks (finance)

In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is dependent. The name is used because the most common of these sensitivities are denoted by Greek letters (as are some other finance measures). Collectively these have also been called the risk sensitivities,risk measures or hedge parameters.

Use of the Greeks

The Greeks are vital tools in risk management. Each Greek measures the sensitivity of the value of a portfolio to a small change in a given underlying parameter, so that component risks may be treated in isolation, and the portfolio rebalanced accordingly to achieve a desired exposure; see for example delta hedging.

The Greeks in the Black–Scholes model are relatively easy to calculate, a desirable property of financial models, and are very useful for derivatives traders, especially those who seek to hedge their portfolios from adverse changes in market conditions. For this reason, those Greeks which are particularly useful for hedging—such as delta, theta, and vega—are well-defined for measuring changes in Price, Time and Volatility. Although rho is a primary input into the Black–Scholes model, the overall impact on the value of an option corresponding to changes in the risk-free interest rate is generally insignificant and therefore higher-order derivatives involving the risk-free interest rate are not common.

Vega (Gijón)

Vega is a parish of the municipality of Gijón / Xixón, in Asturias, Spain.

Its population was 3,507 in 2012.

Vega is a residential and rural area, bordering with the districts of Granda, Castiello Bernueces, Santurio, Caldones, Llavandera y Samartín de Güerces.

The famous La Camocha coal mine (closed 2007) was located in Vega. The mining town of La Camocha (including El Vaticano and Ciudad Virginia barrios) is located in the mine surroundings.

Villages and their neighbourhoods

External links

Vega (Street Fighter)

Vega, known in Japan as Balrog (バルログ, Barurogu), also known as Claw, is a fictional character from the Street Fighter fighting game series by Capcom. Vega is a mask-wearing, claw-wielding fighter from Spain who uses a personal fighting style combining Japanese ninjutsu, French savate, American Zipota and Spanish bullfighting, earning him the nickname of "Spanish Ninja".

Vega first appears in the original Street Fighter II in 1991 as the second of four boss opponents the player faces at the end of the single-player mode, a group known as the Four Devas or Grand Masters. From Street Fighter II: Champion Edition (the second version of the game) onwards, Vega and the other three boss characters, became playable. He reappears as a playable character in Street Fighter Alpha 3, Street Fighter EX2 and EX3, the Capcom vs. SNK series, SNK vs. Capcom: SVC Chaos, Street Fighter IV, Super Street Fighter IV, Street Fighter X Tekken and Street Fighter V.

Conception and creation

Vega was designed by Akira Yasuda with the premise of Street Fighter 1's Geki character in mind, and was initially conceived as a brief sketch of a masked man in a ripped shirt with long, frizzy hair. As development progressed the design evolved into a large, unarmed man, retaining the mask and dressed as a matador. The design was changed again, revolving around the concept of a foreign soldier with a cross on his vest and armed with a broadsword, while still retaining the mask. This design was eventually replaced in turn with another concept, a masked ninja in a bodysuit armed with a long metal claw on his right hand. Ultimately the character's finalized appearance was a culmination of all of these, incorporating various aspects of each into the finished design.