A programmable pattern matching engine efficiently parses the contents of network messages for regular expressions and executes pre-defined actions or treatments on those messages that match the regular expressions. The support and at least first member are operatively joined through at least one member on each of the support and at least first member that cooperate with each other so as to maintain the support and at least first member in a predetermined operative relationship. An Ethernet frame of the at least one command is converted to at least one SAS frame. 5, the MCR and the CB both being determined using a power law model. The second deflector connected to below the bottom of the frameless trailer and positioned rear of the first deflector and forward of the trolley. Further, the method includes receiving a route scope from the routing module.