Question: Valley Apparel LLC is a brand of clothing that consists of what type of casual jacket that was originally created for military pilots, and eventually became part of popular culture and apparel?

Context paragraphs:
B.U.M. Equipment: B.U.M. Equipment, a clothing brand under the ownership of BUM Equipment LLC, is a street fashion clothing company that was founded in 1986 in a Seattle garage.  The brand is known for its beginning as a Los Angeles casual sportswear brand for men, women, and children.  The brand had financial troubles in the mid-1990s under the management of the original owner, Chauvin International, Ltd.  It went bankrupt in 1996 and was acquired by the creditors of B.U.M. International Inc. and managed by SOS Management in 1997.  SOS Management, and its successor B.U.M. Equipment LLC, subsequently relaunched B.U.M. Equipment.  The brand's fashion lines include men's, women's, junior's, and children's sportswear apparel, as well as hosiery, footwear, backpacks, handbags, luggage, and eyewear.  According to the "LA Times", B.U.M. Equipment is "one of the most successful young men's sportswear brands in California fashion history."

Trovata: Trovata is a Newport Beach, California-based clothing company that specializes in casual contemporary apparel.  The clothing line has gained notoriety for combining an East Coast preppy look with a West Coast surfing appeal.  Trovata is notorious for their use of buttons and stripes.  The clothing line was started in 2002 by college friends Jeff Halmos, John Whitledge, Sam Shipley, and Josia Lamberto-Egan, and has won numerous awards for their achievements in design, including the Ecco Domani, CFDA’s Swarovski Perry Ellis for menswear and a $200,000 grant from the CFDA/Vogue Fashion Fund.  John Whitledge is the only one left from the original group that started the line.  Sam Shipley and Jeff Halmos now operate the men's clothing brand Shipley & Halmos.

Johnnie-O: johnnie-O is a clothing company started in 2004 by John O'Donnell.  This company combines "east coast preppy" with "west coast 'dude'" to a create a lifestyle brand referred to as west coast preppy.  They use a surfer with his board as their logo which immediately triggers images of an active but casual outdoor way of life in our social consciousness.  The unique style of the johnnie-O clothing line has made it increasingly popular among golf and entertainment circles.  Actors including John's brother Chris O'Donnell have appeared on popular television shows wearing johnnie-O apparel.

A-2 jacket: The Type A-2 leather flight jacket is an American military flight jacket originally invented and developed for and closely associated with World War II U.S. Army Air Forces pilots, navigators and bombardiers, who often decorated their jackets with squadron patches and elaborate artwork painted on the back.  Sometimes casually referred to as a bomber jacket, its original designation was "Jacket, Pilot's (summer)", and its wartime usage was limited neither to pilots nor to bomber crews.

Leather jacket: A leather jacket is a jacket-length coat that is usually worn on top of other apparel or item of clothing, and made from the tanned hide of various animals.  The leather material is typically dyed black, or various shades of brown, but a wide range of colors is possible.  Leather jackets can be designed for many purposes, and specific styles have been associated with subcultures such as greasers, rednecks, cowboys, hillbillies, motorcyclists, military aviators, police, and music subcultures (punks, goths, metalheads, rivetheads), who have worn the garment for protective or fashionable reasons, and occasionally to create a potentially intimidating appearance.  National Leather Jacket day occurs every June 14th since the Hell's Angels proposed the idea in 1975.

Rafaella: Rafaella, or Rafaella Sportswear, is a women's clothing brand owned by the publicly held international clothing company Perry Ellis International.  Originally created by Rafaella Apparel Group, the brand changed ownership to Cerberus Capital Management before being bought and expanded by Perry Ellis.

King Apparel: King Apparel is a London-based streetwear brand.  It was founded in 2002 by former professional snowboarder/skateboarder Tim Hoad and his friend and graphic designer Paul Linton; their goal was to create a new clothing brand, which reflected the creative freedom of their own lifestyle and culture.  After securing start-up funding from The Princes Trust and Business Link, the brand launched in 2003 with a small range of accessories and t-shirts.  From this modest beginning King Apparel has now grown to present a fully comprehensive range of garments every season including the launch of their sub-brand 'LDN' across the UK and Europe.

Flight jacket: A flight jacket is a casual jacket that was originally created for military pilots and eventually became part of popular culture and apparel.  It has evolved into various different styles and silhouettes including the 'letterman' jacket and the fashionable 'bomber' jacket that is known today.

Aviator Nation: Aviator Nation is a privately owned lifestyle brand of contemporary casual wear founded by Paige Mycoskie in 2006.  The line consists of apparel for men, women, and children with most styles unisex.  The brand's pieces are signified for their natural stitching, worn-in feel, and vintage essence.  Notably, the brand uses single needle stitch-work, and hand drawn graphics to give garments a one-of-a-kind effect resulting in each piece being unlike any other.  The brand currently carries apparel, accessories, and surfboards.  The company is named after Mycoskie's love for aviator-style sunglasses' timeless and versatile appeal.  All Aviator Nation products are manufactured in Southern California, remaining authentic to the brand's key source of inspiration.

Valley Apparel L.L.C.: Valley Apparel L.L.C. is a United States brand of clothing consisting of Flight jackets and military outerwear manufactured in Knoxville, Tennessee for the United States Armed Forces.  Founded in 1959 and independent since 2000, Valley specializes in military style apparel for both the consumer market and military customers in the United States Department of Defense (DOD).

Supporting paragraphs: Valley Apparel L.L.C. Flight jacket
Answer: flight jacket