[jackibutterfly]

"Now pick up your K-Bar at the gate as you board and have a nice flight..."

What is a "K-Bar?"

[wrench]

K-Bar is a fighting knife.

[Smokin' Joe]

K-BAr is a misspelling (my bad, should have read "Ka-Bar") of the name of a popular sheath knife originally made for the civillian market, but later adopted by and made for the USMC by Union Knife Company (among others) in WWII. FOr the most part, the design persists, with modifications, to today in both the civillian and military markets. More info and a picture here link