The organizers of the 9/11 attacks apparently planned and coordinated their mission in face to face meetings and used little or no electronic communication. This "radio silence" made their plan more difficult to detect. The hijackers intentions on the 9/11 attack was for blood to flow, and there to be widows and orphans. The hijackers specifically chose their planes by how much fuel each one had in them. The more fuel in the planes the more damage it does when crashed into an area.
Cell phones and in-plane credit card phones played a major role during and after the attack, starting with hijacked passengers who called family or notified the authorities about what was happening. Passengers aboard United Airlines Flight 93 were able to assess their situation based on these conversations and plan a counter attack that resulted in the aircraft crashing before it reached its intended target. According to the commission staff: "Their actions saved the lives of countless others, and may have saved either the U. S.
Capitol or the White House from destruction. " Radio complications and mass confusion presented intense complications for New York Fire chiefs trying to contact and guide their firefighters in both towers. The 9/11 Commission details that communication between the North and South Towers was not possible. The 9/11 Commission also relates issues with codes and protocol while emergency personnel attempted to communicate with one another. evacuation orders did not follow the protocol for giving instructions when a building's collapse may be imminent.