"The covert operators that I ran with would blow up a 747 with 300 people to kill one person. They are total sociopaths with no conscience whatsoever." - Former Pentagon CID Investigator Gene Wheaton
On 21 December 1988, Pan Am flight 103 was blown up over Lockerbie in Scotland. 270 people died.
Minutes before flight 103 took off from London's Heathrow airport, FBI Assistant Director Oliver 'Buck' Revell took his son and daughter-in-law off the plane. 
Revell was an associate of Lt. Colonel Oliver North who was linked to Iran-Contra. .
North ‘was a business associate of Syrian arms and drug runner Monzer al-Kassar.’ 
Al-Kassar was closely linked with Rifat Assad, brother of Syrian ruler Hafez Assad. Rifat ‘was married to the sister of Ali Issa Dubah, chief of Syrian intelligence, who, along with the Syrian army, controlled most of the opium production in Lebanon's Bekka Valley.’ 
Reportedly, al-Kassar was involved in shipping heroin from Lebanon into the USA.
Reportedly, al-Kassar's drug route to the United States was protected by the CIA. 
The American Drug Enforcement Agency "was already using Pan Am flights out of Frankfort, Germany, for ‘controlled delivery’ shipments of heroin." 
A team led by Major Charles McKee of the Defense Intelligence Agency (DIA), and Matthew Gannon, the CIA's Deputy Station Chief in Beirut, traveled to Lebanon to try to get some hostages released. 
According to Juval Aviv, the Lockerbie investigator for Pan Am, McKee's team discovered the illegal CIA drug operation and refused to participate.
According to Aviv, McKee contacted the CIA headquarters but got no reply. McKee and Gannon, ‘against orders... decided to fly home to blow the whistle.’
According to Aviv: 'They had communicated back to Langley the facts and names, and reported their film of the hostage locations. CIA did nothing. No reply. The team was outraged, believing that its rescue and their lives would be endangered by the double dealing.
Reportedly Ahmed Jibril (founder and leader of the Popular Front for the Liberation of Palestine - General Command ) had a base near Frankfort. Reportedly, Jibril had links to al-Kassar.
Reportedly bomb maker Marwan Abdel Razzack Khreeshat was part of Jibril’s cell. On 26 October Khreesat was arrested and one of his bombs seized. Then Khreesat was mysteriously released. 
Former CIA agent Oswald Le Winter stated, "…pressure had come from Bonn… from the U.S. Embassy in Bonn… to release Khreesat." 
Reportedly, Khreesat worked for U.S. intelligence. 
Allegedly, one of Khreesat's bombs was used to bring down Pan Am flight 103 over Lockerbie.
McKee, Gannon and five other members of their team were killed when Pan Am flight 103 came down over Lockerbie. ? 
After the crash
A member of a mountain rescue team said: "We arrived within two hours [of the crash]. We found Americans already there." 
According to George Stobbs, a Lockerbie police inspector, "[I] started to set up a control room, and [between] eleven o'clock and midnight, there was a member of the FBI in the office who came in, introduced herself to me, and sat down — and just sat there the rest of the night. That was it." 
Tom Dalyell, a member of British Parliament, stated: "…Absolutely swarms of Americans [were] fiddling with the bodies, and shall we say tampering with those things the police were carefully checking themselves. They weren't pretending, saying they were from the FBI or CIA, they were just 'Americans' who seemed to arrive very quickly on the scene."
Dalyell recalled: "It was… odd and strange that so many people should be involved in moving bodies, looking at luggage, who were not members of the investigating force. What were they looking for so carefully? You know, this was not just searching carefully for loved ones. It was far more than that. It was careful examination of luggage and indeed bodies." 
Dr. David Fieldhouse, the local police surgeon, identified Major McKee's body. "I knew that [the identification of] McKee was absolutely correct because of the clothing which correlated closely with the other reports and statements, and the computers that were linked up to Washington." 
Jim Wilson, local farmer, told relatives of Pan Am victims that he was present "when the drugs were found." Wilson discovered a suitcase packed with heroin in one of his fields.
One Scottish police officer said that his department had been told to keep an eye out for the drugs early on.