FIFA, Miami Stadium officials, local authorities and World Cup fans.
During the World Cup group stage after past Copa America final chaos.
FIFA and local officials tightened security at Miami Stadium after the chaotic Copa America final raised fears of a repeat at the World Cup. The Colombia-Portugal match became a major test because of huge ticket demand.
Organisers added a third security perimeter, extra ticket checks, shuttle controls and a no-tailgating policy to keep non-ticket holders away. The system worked smoothly, with further pressure expected when Argentina return to Miami against Cape Verde.