In 1999 , O'Neill sent a close associate named Mark Rossini to work in CIA 's Bin Laden Issue Station in Virginia . He had a conflict with station chief Michael Scheuer ; O'Neill wanted Rossini to stay at station and feed him information about what the CIA was doing , while Rich Blee , who had been appointed by CIA chief George Tenet to head of the Bin Laden Issue Station , wanted him out working in the field . Later on , the CIA Bin Laden station learned that Bin-Laden associates Nawaf al-Hazmi and Khalid al-Mihdhar were headed to the US with Visas . Rossini and his associate Doug Miller attempted to alert O'Neill but the message was blocked by Blee . Mihdhar and Hazmi became two of the hijackers of American Airlines Flight 77 on 9/11
American Airlines Flight 77
American Airlines Flight 77
John P. O'Neill