 Evidence revealed that Poindexter was a leader in the organization of the transfer of the weapons to Iran and oversaw other people involved in the affair, such as Oliver North.Poindexter and North communicated through a channel known as the "Private Blank Check" which Poindexter set up on a National Security Council (NSC) computer.Through this system, Poindexter and North were able to send messages called PROFS notes back and forth without being intercepted by other NSC staff members.