Question: Which survivor of the mass shooting that took place on October 16, 1991, at a Luby's restaurant in Killeen, Texas, United States became a leading advocate of an individual's right to carry a concealed weapon?

Context paragraphs:
2009 Fort Hood shooting: On November 5, 2009, a mass shooting took place at Fort Hood, near Killeen, Texas.  Nidal Hasan, a U.S. Army major and psychiatrist, fatally shot 13 people and injured more than 30 others.  The shooting was the worst mass shooting on an American military base.

Designated survivor: In the United States, a designated survivor (or designated successor) is an individual in the presidential line of succession, usually a member of the United States Cabinet, who is arranged to be at a physically distant, secure, and undisclosed location when the President and the country's other top leaders (e.g., Vice President and Cabinet members) are gathered at a single location, such as during State of the Union addresses and presidential inaugurations.  This is intended to guarantee continuity of government in the event of a catastrophic occurrence that kills the President and many officials in the presidential line of succession, such as a mass shooting, bombing or attack.  If such an event occurred, killing both the President and Vice President, the surviving official highest in the line, possibly the designated survivor, would become the Acting President of the United States under the Presidential Succession Act.

2009 Collier Township shooting: The 2009 Collier Township shooting, also referred to as the 2009 Bridgeville LA Fitness shooting, was a mass shooting and murder-suicide that took place on August 4, 2009 in an LA Fitness health club in Collier Township, a suburb of Pittsburgh, Pennsylvania.  The attack resulted in four deaths, including that of the perpetrator, who took his own life.  Nine other people were injured.  The fitness center is approximately 10 mi south of Pittsburgh, in the Great Southern Shopping Center, a strip mall located in the Kirwan Heights section of Collier Township.

Suzanna Hupp: Suzanna Gratia Hupp, DC (born September 28, 1959), is a former Republican member of the Texas House of Representatives, who represented traditionally Democratic District 54 (Bell, Burnet, and Lampasas counties) for ten years from 1997–2007.  After surviving the Luby's shooting in 1991, Hupp became a leading advocate of an individual's right to carry a concealed weapon.  Hupp was elected to her first of five consecutive terms in 1996.  She did not seek a sixth two-year term in 2006.  She has also written a book called "From Luby’s to the Legislature: One Woman’s Fight Against Gun Control", published by Privateer Publications, San Antonio, Texas.

2012 Aurora shooting: On July 20, 2012, a mass shooting occurred inside a Century 16 movie theater in Aurora, Colorado, during a midnight screening of the film "The Dark Knight Rises".  A gunman, dressed in tactical clothing, set off tear gas grenades and shot into the audience with multiple firearms.  Twelve people were killed and 70 others were injured, the largest number of casualties in a shooting in the United States until the Orlando nightclub shooting four years later.  This also was the deadliest shooting in Colorado since the Columbine High School massacre in 1999.  The sole assailant, James Eagan Holmes, was arrested in his car outside the cinema minutes later.  Prior to the shooting, Holmes rigged his apartment with homemade explosives, which were defused by a bomb squad a day after the shooting.

Mass shooting: A mass shooting is an incident involving multiple victims of firearms-related violence.  The United States' Congressional Research Service acknowledges that there is not a broadly accepted definition, and defines a "public mass shooting" as one in which four or more people selected indiscriminately, not including the perpetrator, are killed, echoing the FBI definition of the term "mass murder".  Another unofficial definition of a mass shooting is an event involving the shooting (not necessarily resulting in death) of four or more people with no cooling-off period.  Related terms include school shooting and massacre.  The lack of a single definition can lead to alarmism in the news media, with some reports conflating categories of crimes.

Concealed carry in the United States: Concealed carry or carrying a concealed weapon (CCW), is the practice of carrying a weapon (such as a handgun) in public in a concealed manner, either on one's person or in close proximity.  Not all weapons that fall under CCW laws are lethal.  For example, in Florida, carrying pepper spray in more than a specified volume (2 oz.)  of chemical requires a CCW permit, whereas anyone may legally carry a smaller, “self-defense chemical spray” device hidden on their person without a CCW permit.  As of 2017 there have been 16.3 million concealed weapon permits issued in the United States.

Luby's shooting: The Luby's shooting, also known as the Luby's massacre, was a mass shooting that took place on October 16, 1991, at a Luby's restaurant in Killeen, Texas, United States.  The perpetrator, George Hennard, drove his pickup truck through the front window of the restaurant, and immediately shot and killed 23 people, and wounded 27 others before fatally shooting himself.  It is the fourth deadliest massacre by a single shooter in U.S. history.

Clyde Apperson: Clyde Apperson (born 1955) a.k.a. C was arrested on Nov. 6th 2000 for running the largest illicit LSD manufacturing operation in the history of the United States with partner William Leonard Pickard.  In 2003 Apperson was sentenced to 30 years of imprisonment without the possibility of parole.  Court documents detail an extensive criminal record for Pickard dating back to a 1964 charge of car theft in Georgia.  Totaling more than 10 incidents, one as recently as December 1988, including forgery, theft and false identification charges to arrests for manufacturing MDA, LSD and Synthetic Mescaline to carrying a concealed weapon.  Apperson reportedly has no criminal history.

Charleston church shooting: The Charleston church shooting (also known as the Charleston church massacre) was a mass shooting, that took place at the Emanuel African Methodist Episcopal Church in downtown Charleston, South Carolina, United States, on the evening of June 17, 2015.  During a prayer service, nine people (including the senior pastor, state senator Clementa C. Pinckney) were killed by domestic terrorist Dylann Roof, a 21-year-old white supremacist.  Three other victims survived.  The morning after the attack, police arrested Roof in Shelby, North Carolina.  Roof confessed to committing the shooting in hopes of igniting a race war.  The shooting targeted one of the United States' oldest black churches, which has long been a site for community organization around civil rights.

Supporting paragraphs: Suzanna Hupp Luby's shooting
Answer: Suzanna Gratia Hupp