The name Mark “Oz” Geist is instantly recognizable to veterans and patriotic Americans everywhere. Nine Line is proud to continue our ongoing partnership with the man, the myth, the legend himself. We offer a full line of designs to honor his service to brotherhood and patriotism to country. These designs bring to life the values that “Oz” carries with him day in and day out. With this collection, now our fans and followers can support these values and the “Oz” warrior ethos!

Mark “Oz” Geist is a member of the Annex Security Team that fought the Battle of Benghazi, Libya, from September 11 to September 12, 2012. A Colorado native, Mr. Geist joined the United States Marine Corps in 1984. During his time in the service, he served in Barracks Duty in the Philippines, then with the 2nd Battalion 9th Marines Golf Company, as well as the Surveillance and Target Acquisition Platoon. He then was chosen to serve in the newly formed Marine Cadre program as an Anti-/Counter- Terrorism Instructor. Upon the completion of a very successful tour and re-enlistment, Mr. Geist changed his military occupational specialty to the Intelligence field, specializing in Interrogation Translation. He attended language school where he studied Persian Farsi.

After serving 12 years in the United States Marine Corps, Mr. Geist became a Deputy Sheriff in Teller County, Colorado. In that role, he was assigned as liaison with the Vice Narcotics and Intelligence Unit in Colorado Springs, Colorado, as well as an Investigator for Crimes against Children. Certified as a Forensic Interviewer of children, he investigated numerous cases of abuse in which he helped to secure convictions of the perpetrators. He then took a job as Chief of Police in Fowler, Colorado. After leaving the Fowler Police Department, Mr. Geist began his own business in private investigations as well as bounty hunting and bail bonds.

In 2004, Mr. Geist began doing contract security work in Iraq. He worked for Triple Canopy, providing Personal Security Details for Department of State personnel in Baquba, Iraq. Upon the completion of that contract he worked for USIS, the United States Investigative Services, training Iraqi SWAT teams and Personal Security Details. He also served as a mentor/advisor to the Personal Security Detail of Dr. Ayad Allawi, the former Prime Minister of Iraq.

Mr. Geist finished his career as a security contractor in Benghazi, Libya, where he was credited with helping to save the lives of more than 25 Americans. Mr. Geist is still recovering from the injuries he sustained in the battle. He is a co-author of the bestselling book 13 Hours: The inside Account of What Really Happened in Benghazi.

Be The Calm with Mark "Oz" Geist



The Mark Geist collection truly embodies the “Oz” warrior ethos. A cue to stand stoic and focused in the face of uncertainty and unrest, Be The Calm serves to reinforce the importance of poise under adversity – to which anyone experiencing hardships can relate.


Let Em Come with Mark "Oz" Geist




Mark “Oz” Geist – “Let ‘Em Come”! This partnership design, “Let ‘Em Come” captures the essence of the courage, strength and motivation that Mark “Oz” Geist portrayed throughout his military career as a Marine and as an ex-military contractor providing security to a U.S. compound in Benghazi, Libya the night of September 11, 2012.


Compass with Mark "Oz" Geist




The Mark “Oz” Geist collection delivers a powerful message on the human spirit, and what guides it. The “Compass” represents confidence in direction, and the unwavering ability to lead you through life’s journey. Through disorientation, stormy weather, and uncertain times, the compass will stay true – and serve as a beacon that pushes you forward and into the future, leaving the trials of the past behind.



Nine Line is an American Clothing Company with American made Apparel and Accessories- Veteran Owned and Operated