Charles Joseph Whitman (June 24, 1941 – August 1, 1966) was an American mass murderer who became infamous as the "Texas Tower Sniper".
 On August 1, 1966, he murdered his mother and wife in their homes, then went to the University of Texas at Austin where he shot and killed three people inside the university's tower.
 He then went to the tower's 28th-floor observation deck, where he fired at random for some 96 minutes, killing an additional eleven people and wounding thirty-one before being shot and killed by police.
 Sixteen people were killed in total; a 17th victim died in 2001 from injuries sustained in the attack.
British Army corporals David Howes and Derek Wood were killed by the Provisional IRA on 19 March 1988 in Belfast, Northern Ireland, in an event which became known as the corporals killings.
 The off-duty soldiers were wearing plain-clothes when they were killed by the IRA after encountering the funeral procession of an IRA member whilst returning from Belfast to Lisburn.
 Three days before, loyalist paramilitary Michael Stone had attacked an IRA funeral and killed three people.
 Believing the soldiers were loyalists intent on repeating Stone's attack, dozens of people surrounded and attacked their car.
 During this, Corporal Wood drew his service pistol and fired a shot in the air.
 The soldiers were then dragged from the car, beaten, and taken to nearby waste ground where they were stripped and shot dead.
The "comando España" of ETA had been responsible for 20 deaths in the previous year, these included an attack in Madrid three months earlier, which had resulted in five deaths, and an attack the previous month which had killed three people.
 ETA as a whole had been responsible for 24 deaths in 1986 prior to the attack, 18 of those had occurred in Madrid, leading to claims that the organisation was focusing on the Spanish capital because it believed that attacks there had greater influence on public opinion than attacks in the Basque region.
 The attack had the highest number of casualties since the El Descanso bombing, by suspected Islamic Jihadists in April 1985, had killed 18 people.
Dassanayake Mudiyanselage Dassanayake (29 April 1953 – 8 January 2008) was a Sri Lankan politician from the Puttalam District.
 He was serving as a member of the Parliament of Sri Lanka and non-cabinet Minister of Nation Building when he was assassinated in a roadside bomb attack on 8 January 2008 in Ja-Ela, twelve miles north of Colombo.
 The attack, which was blamed on the militant Tamil Tigers organization, killed three people and injured ten others.
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Hurricane Gonzalo was the second tropical cyclone, after Hurricane Fay, to directly strike the island of Bermuda in a one-week time frame in October 2014, and was the first Category 4 Atlantic hurricane since Hurricane Ophelia in 2011.
 At the time, it was the strongest hurricane in the Atlantic since Igor in 2010.
 Gonzalo struck Bermuda less than a week after the surprisingly fierce Fay; 2014 was the first season in recorded history to feature two hurricane landfalls in Bermuda.
 A powerful Atlantic tropical cyclone that wrought destruction in the Leeward Islands and Bermuda, Gonzalo was the seventh named storm, sixth and final hurricane and only the second major hurricane of the below-average 2014 Atlantic hurricane season.
 The storm formed from a tropical wave on October 12, while located east of the Lesser Antilles.
 It made landfall on Antigua, Saint Martin, and Anguilla as a Category 1 hurricane, causing damage on those and nearby islands.
 Antigua and Barbuda sustained US$40 million in losses, and boats were abundantly damaged or destroyed throughout the northern Leeward Islands.
 The storm killed three people on Saint Martin and Saint Barthélemy.
 Gonzalo tracked northwestward as it intensified into a major hurricane.
 Eyewall replacement cycles led to fluctuations in the hurricane's structure and intensity, but on October 16, Gonzalo peaked with maximum sustained winds of 145 mph (230 km/h).
Sylvia Wynanda Seegrist (born July 31, 1960) is an American woman who on October 30, 1985, opened fire at a Springfield, Pennsylvania shopping mall.
 Springfield is a suburb of Philadelphia, located about 10 miles (16 km) west of the city.
 Seegrist killed three people and wounded seven others before being disarmed by a good Samaritan who was shopping at the mall.
 The individuals killed included two men and a two-year-old boy.
 She was 25 years old and had been diagnosed as suffering from paranoid schizophrenia 10 years earlier.
 Having been committed and discharged from mental care several times, her case stimulated discussion about the state's authority to commit at-risk people into mental care facilities versus individual rights.
Dzhokhar Anzorovich "Jahar" Tsarnaev (Cyrillic: Джохáр Анзóрович Царнáев ; born July 22, 1993) is a Kyrgyz-American man of Chechen descent who was convicted of planting bombs at the Boston Marathon on April 15, 2013, along with his brother Tamerlan Tsarnaev.
 The bombings killed three people and injured approximately 280 others.
 At the time of the bombings, Tsarnaev was a student at University of Massachusetts Dartmouth.
 Following the bombings, on April 18, there was a shootout between police and the Tsarnaev brothers.
 Tamerlan was killed and an MBTA police officer was critically injured in the course of Tsarnaev's escape in an SUV.
 Tsarnaev was injured but escaped, and a manhunt ensued, with thousands of police searching a 20-block area of Watertown, Massachusetts.
 On the evening of April 19, the heavily wounded Tsarnaev was found unarmed hiding in a boat on a trailer in Watertown just outside the police perimeter, arrested, and taken to a hospital.
The National Guard of the United States, part of the reserve components of the United States Armed Forces, is a reserve military force, composed of National Guard military members or units of each state and the territories of Guam, of the Virgin Islands, and of Puerto Rico, as well as of the District of Columbia, for a total of 54 separate organizations.
 All members of the National Guard of the United States are also members of the militia of the United States as defined by  /246 § 246  .
 National Guard units are under the dual control of the state and the federal government.
The Hurricane Cindy (2005) tornado outbreak was a two-day tornado outbreak that was associated with the passage of Hurricane Cindy across the Southern United States starting on July 6, 2005 across the Gulf Coast states of Alabama and Florida as well as Georgia before ending in the Middle Atlantic Coast on early on July 8.
 The outbreak caused no fatalities and only one injury but was fairly strong, as there were three F2 tornadoes spawned due to Cindy.
 The hurricane itself killed three people, two in Georgia, one in Alabama.
 Cindy produced a total of 44 tornadoes across seven states in a two-day span.
 Just three days after Hurricane Cindy had stuck the Southeastern United States, a much stronger and deadlier storm, Hurricane Dennis, made landfall on the Florida Panhandle on July 10.
On September 6, 2011, a gunman, identified as 32-year-old Eduardo Sencion, opened fire in a branch of the IHOP in Carson City, Nevada, killing four people, including three members of the National Guard, and wounding seven others.

Question: The 2011 IHOP shooting killed three people in an organization that is under the control of whom?
Answer: the state and the federal government