a suspected mexican drug cartel leader s arrest, sparks gun fights and burning roadblocks in mexico. it happened in northern tamaulipas, which borders the united states. friday, mexican authorities captured a cartel leader, and set off gun fights between cartel members and authorities. the gunman blocked off parts of the city with burning vehicles. three suspected cartel members died in the gun fights. several detained. parts of mexico remain in a violent battle between rivals from the golf cartel and los zedas. 20 years later, wounds remain for many who lived through the oklahoma city bombing. yes, if it s been 20 years. you ll hear from people forever changed by at take. and how one man who knew about the deadly plan is walking free.