D. B. Cooper and Flight 305: an FBI / CIA view

I received the following comment on D. B. Cooper and Flight 305 from a former top official of both the FBI and the CIA:

"As the former Director of the FBI Academy and Laboratory not to mention my time at CIAHQ as Director of Public Affairs, DB Cooper has been a hot topic of debate for years. I have talked to many experts/scientists in an attempt to understand or explain the challenges of such a jump. Lot's of theories and imagination, not to mention a few drinks, has not produced a viable theory that everyone can agree to. S**t luck had to play an important role!!"