Gary Sigler was serving as a navigator/co-pilot on an RF-4 (Reconnaissance) Phantom flying his ninety-second mission in April 1967 when his plane crashed near Hanoi, North Vietnam. (The pilot had taken evasive actions to avoid a surface-to-air missile.) He spent the next six years as a prisoner of war in the Hanoi Hilton, surviving torture, brutal interrogation and many months of solitary confinement. As the years progressed, the prisoners were occasionally visited by outsiders, mostly by individuals or groups who were opposed to the war. In March 1973, following the Paris Peace Accords Sigler was released. Not until 2000 did he experience any symptoms of PTSD.