Gibbs: Rule number nine.
Vance: How did you get that by security?
Gibbs: Never go anywhere without a knife.
Vance: How did you get that by security?
Gibbs: Never go anywhere without a knife.
Gibbs : Rule number nine.
Vance : How did you get that by security?
Gibbs : Never go anywhere without a knife.
http://www.tv-quotes.com/shows/ncis/quote_32475.html