non-disclosure agreement. Nor did many delay box manufacturers wish to be forced to comply with NHRA design change demands. These manufactures promptly went out of business or transitioned into non-racing related markets. As a result, very few companies manufacture delay boxes for drag racing today and each design is close in functionality to the next. The reduced competition allows these few companies to enjoy the entire market to themselves. Innovation has virtually ceased in the market. The approved manufacturers of delay boxes also enjoy a bonus of reduced competition in the market for their other on-board race timers such as: throttle stop timers, data loggers (data recorders), shifter timers, RPM switches, electronic nitrous oxide injection controllers and other devices. Delay box manufacturers that do not receive NHRA approval are shut out of the entire drag race electronics market. As mentioned above, in the paragraph one under "Controversial Use", many drag race track operators began dividing race day into "box" and "no box" classes, with "no box class" being prohibited from using any type of delay box in their race cars. However, electronic track timing systems were still used for the "no box class" meaning that a racer willing to cheat could rather easily conceal a delay box somewhere in his car (or on his person), and have an unfair advantage over his competitors. Race track operators therefore created a monumental task for themselves in enforcing rules against electronic devices in Bracket Racings "no box class", and as such, rarely pursue enforcement. On the occasions a track operator does attempt to catch cheaters with delay timers in the "no box" class, the enforcement task can be significantly complex and the results are usually controversial. This creates tension between all racers and between racers and the track operators as well. The popular United States cable television program "Pinks" (Speed Channel) uses the TV shows host as a flagman with an arm drop technique at the start line (plus finish line human spotters, and camera "photo finishes" similar to those used in horse racing and dog racing). This simulates drag racing's historic roots of post WWII street racing of the 1940s, and non-electronic drag strip racing of the 1950s and 1960s. The delay box is useless in Pinks, since the first pass is run with the Pro tree (.400 three ambers) instead of the Standard Tree (.500 per light), and the second pass