Cota's mansion seen in the film is the real-life Palace In The Sky located in Tagaytay City outside Manila, Philippines. The palace was erected in 1979 by former Philippine First Lady Imelda Marcos - known as the People's Park In The Sky.
Ramon Cota has a Cessna sitting on the arch over the entrance to his compound. This is a reference to Pablo Escobar, a similar flamboyant real-life Columbian drug dealer who also had such an entrance to his compound.
Five crew members were killed in a helicopter accident during filming. The film is dedicated in their memory. They were: Jojo Imperiale (pilot), Geoff Brewer (stuntman/Actor: Maj. Anderson), Gadi Danzig (cameraman), Mike Graham (key grip) & Don Marshall (gaffer).
When Col. McCoy and the others are pined down in the village. McCoy Shoots one of Cota's men and the slid on his automatic locks back. Then he tells the girl to go get in the hut and shoots at least 8 more times with the slid locked back.
As Ramon Cota is being pulled up to the helicopter high above the ground, Col. Scott McCoy watches Cota's harness rope coming apart. When the rope breaks, Cota falls through the sky, and there is clearly a parachute pack on him in the harness that shouldn't have been there.