MSG Mack Gerhardt
Full Name MacDonald James Gerhardt
Place of Birth Syracuse, New York
Relatives Tiffy Gerhardt (wife), Lissy Gerhardt (daughter), Jenny Gerhardt (daughter), Ralph Gerhardt (father), Patricia Gerhardt (mother)
Affiliation United States Army
Rank Master Sergeant
Hair Light-Brown
Eyes Blue
Height 6'1 ft.
Weight 200 lbs.

Master Sergeant Mack Gerhardt is a highly accomplished special operations soldier who has helped save the United States from devastating national security threats on numerous occasions.

MacDonald James Gerhardt was born and raised in Syracuse, New York. His father, Ralph, was a high school art teacher; while his mother, Patricia, was a parole officer. Upon graduating from high school, Mack enlisted in the United States Army. After completing basic combat training and then infantry advanced individual training at the U.S. Army Infantry School at Fort Benning, he was assigned to the 101st Airborne Division at Fort Campbell as an infantryman in the 1st Battalion, 327th Infantry Regiment. A few months later, Mack began dating Tiffy Brammell, a middle school teacher's assistant. He later earned the Air Assault Badge at the U.S. Army Air Assault School and then the Basic Parachutist Badge at the U.S. Army Airborne School. A little while after he earned the Ranger Tab at the U.S. Army Ranger School, he and Tiffy were married.

Soon after Mack became a fire team leader, he went through Ranger indoctrination training and was then assigned to the 2nd Ranger Battalion. He eventually rose to the position of a squad leader. Following that, Mack earned the Expert Infantryman Badge. Right after he attended and passed the Reconnaissance Surveillance Leaders Course, he applied to join the Regimental Reconnaissance Company. Upon passing the selection course and completing the operator training course, Mack was assigned to Regimental Reconnaissance Company Team 2. He was elevated to the position of assistant team sergeant shortly upon his promotion to Sergeant First Class. After Mack attended the Combat Diver Qualification Course, a representative of the Joint Special Operations Command invited him to apply to join an elite ultra-clandestine special operations unit.

Designated "1st Special Actions Group", this black ops team is simply referred to as "The Unit" by its members. The Unit officially does not exist and its immediate chain of command goes to The Unit's commanding officer straight to the President of the United States; this bypasses the Secretary of Defense. Though it is specifically directed to kill or capture high value targets or dismantle terrorist cells, The Unit often engages in direct action missions, hostage rescues, and covert missions working directly with the Central Intelligence Agency, as well as high ranking protective services of U.S. leaders during visits in war torn countries. It operates under the cover of being known as the 303rd Logistical Studies Group, and its operators are all under cover of being desk bound clerks and military logistics personnel.

With Tiffy's reluctant support, Mack accepted the offer and applied to join the 1st Special Actions Group. After passing the assessment and selection, he went on to the operator training course. Upon completing training, Mack was assigned to the The Unit's Alpha Team. Just two years later, he was promoted to Master Sergeant and was elevated to the position of assistant team leader. In his capacity as an assistant team leader in The Unit, Master Sergeant Mack Gerhardt engages in and takes a lead role in such missions as hostage rescue, the capture and elimination of terrorist forces and intelligence gathering on terrorist threats, as well as various other "projects" authorized by the U.S. government deemed unsuitable and too risky for standard military forces.


  • This character appeared in the CBS television series, The Unit.
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