Question: Which one of the stars of the film "I'm Dangerous Tonight" was a former marine drill instructor?

Context paragraphs:
U.S. military instructor badges: The U.S. military issues instructor badges to specially training military personnel who are charged with teaching military recruits the skills they need to perform as members of the U.S. Armed Forces or teach continuing education courses for noncommissioned officers and officers in the military.  With the exception of the U.S. Army and U.S. Coast Guard, these badges are considered temporary military decorations and must be surrendered upon completion of one's duty as a military instructor.  Because of this, the U.S. Air Force, U.S. Navy, and U.S. Marine Corps award Drill Instructor Ribbons as a permanent decoration to recognize service members who have qualified and performed as military instructors.

I'm Dangerous Tonight: I'm Dangerous Tonight is a 1990 American made-for-television horror film directed by Tobe Hooper and starring Mädchen Amick, Corey Parker, R. Lee Ermey and Anthony Perkins.  It made its debut on the USA Network on August 8, 1990, before being released on home video.

R. Lee Ermey: Ronald Lee Ermey (born March 24, 1944), known professionally as R. Lee Ermey, or even Lee Ermey, is an American actor and voice actor, best known for his role as Gunnery Sergeant Hartman in "Full Metal Jacket", which earned him a Golden Globe Award nomination for Best Supporting Actor.  He is a former United States Marine Corps staff sergeant and an honorary gunnery sergeant; during his tenure in the U.S. Marine Corps, he served as a drill instructor.

Ribbon Creek incident: The Ribbon Creek incident occurred on the night of April 8, 1956, when Staff Sergeant Matthew McKeon, a junior drill instructor at the Marine Corps Recruit Depot Parris Island, South Carolina, marched his assigned platoon into Ribbon Creek, a swampy tidal creek.  The incident resulted in the deaths of six US Marine Corps recruits. McKeon was found guilty of possession and use of alcoholic beverage.

Chuck Taliano: Charles "Chuck" Taliano Jr. (May 9, 1945 – June 4, 2010) was an American Marine Sergeant and drill instructor.  Taliano was featured as a drill instructor in a well known Marine Corps recruitment poster using the slogan, ""We don’t promise you a rose garden"".  Taliano was photographed for the poster in 1968 while waiting for an honorable discharge at Marine Corps Recruit Depot Parris Island in South Carolina.

Series commander: The Series Commander is a United States Marine Corps officer assigned to a Recruit Training Company who is responsible for the conduct and instruction of Marine recruits and Marine Corps Drill Instructors within one of the two series, lead or follow.  Series Commanders are typically of the rank of First Lieutenant (O-2) or Captain (O-3), and they are assisted in their duties by a Series Chief Drill Instructor (MCRD San Diego) or a Series Gunnery Sergeant (MCRD Parris Island).

Drill Instructor Ribbon: A Drill Instructor Ribbon is a military award of the United States Armed Forces which is issued by the U.S. Navy, U.S. Air Force and U.S. Marine Corps.  The Drill Instructor Ribbon recognizes those service members who are trained and qualified as military instructors to new recruits during initial basic training.

SLAF Diyatalawa: SLAF "Diyatalawa" is the Sri Lanka Air Force station in Diyatalawa.  It is the primary ground combat training centre for SLAF Regiment and other trades.  It runs basic combat courses for officer cadets and recruits as well as Advanced training for SLAF Regiment officer cadets.  Gunner instructor technique course, drill instructor technique course and physical training instructor course are carried out here.

Harvey Walden IV: Harvey Walden IV (born December 21, 1966 in Chicago, Illinois) is a former United States Marine drill instructor, author, actor and television host.

Lock n' Load with R. Lee Ermey: Lock n' Load with R. Lee Ermey is a reality television series about the development of military weaponry throughout the centuries.  Hosted by actor and former U.S. Marine drill instructor R. Lee Ermey, its one season originally aired on the History channel in 2009.

Supporting paragraphs: I'm Dangerous Tonight R. Lee Ermey
Answer: R. Lee Ermey