The call into the show or the info?
There are many LE alerts generated by local agencies in addition to the Feds. The alerts can be generated by info from other agencies, interrogation, evidence, etc.
Who can remember those two MEs who, not long after 9/11, were yanking on the chain of the Georgia waitress, who called law enforcement to report that she overheard these guys talking about blowing something up and that they were driving down to Florida to do it?
They caught the guys at a tollbooth in Florida. Turned out they were clean and that they were actually enroute to some hospital job in Miami. Of course they played the race card
Just imagine the number of alerts this (eventually bogus) situation generated.
Many pan out, many do not.
The info.
There were no such arrests at the San Yisdro Port of Entry that match the callers description, during the time frame given by the caller.