Question: Roger Depue was on the panel investigating the event that occurred on what date?

Context paragraphs:
Cohort study: A cohort study is a particular form of longitudinal study (panel study) that sample a cohort (a group of people who share a defining characteristic, typically who experienced a common event in a selected period, such as birth or graduation), performing a cross-section at intervals through time.  A cohort study is a panel study, but a panel study is not always a cohort study as individuals in a panel study do not always share a common characteristic.

53rd Primetime Emmy Awards: The 53rd Primetime Emmy Awards were held on Sunday, November 4, 2001, seven weeks late.  The ceremony was rescheduled twice from its original date of September 16 at the Shrine Auditorium because of the September 11, 2001 attacks that occurred five days prior to the event.  It was also removed from its rescheduled date of October 7 again at the same venue as a result of the start of the War in Afghanistan.  The event was then relocated to the Shubert Theater.  The Shubert had previously hosted the 1973 and 1976 ceremonies, and was slated for demolition in 2002.  The ceremony was hosted by Ellen DeGeneres and was broadcast on CBS.

United Nations Security Council Resolution 1457: United Nations Security Council resolution 1457, adopted unanimously on 24 January 2003, after recalling resolutions 1291 (2000), 1304 (2000), 1323 (2000), 1332 (2000), 1341 (2001), 1355 (2001), 1376 (2001), 1417 (2002) and 1445 (2002) on the situation in the Democratic Republic of the Congo, the Council condemned the plundering of natural resources in the country and requested a six-month mandate for a panel investigating the issue.

Subset simulation: Subset simulation is a method used in reliability engineering to compute small (i.e., rare event) failure probabilities encountered in engineering systems.  The basic idea is to express a small failure probability as a product of larger conditional probabilities by introducing intermediate failure events.  This conceptually converts the original rare event problem into a series of frequent event problems that are easier to solve.  In the actual implementation, samples conditional on intermediate failure events are adaptively generated to gradually populate from the frequent to rare event region.  These 'conditional samples' provide information for estimating the complementary cumulative distribution function (CCDF) of the quantity of interest (that governs failure), covering the high as well as the low probability regions.  They can also be used for investigating the cause and consequence of failure events.  The generation of conditional samples is not trivial but can be performed efficiently using Markov Chain Monte Carlo (MCMC).

Town Bloody Hall: Town Bloody Hall is a 1971 documentary film of a panel debate between feminist advocates and activist Norman Mailer.  Filmed on April 30, 1971, in The Town Hall in New York City, "Town Bloody Hall" features a panel of feminist advocates for the women's liberation movement and Norman Mailer, the writer of "The Prisoner of Sex".  Chris Hegedus and D. A. Pennebaker produced the film, which stars Jacqueline Ceballos, Germaine Greer, Jill Johnston, Diane Trilling, and Norman Mailer.  The footage of the panel was recorded and released as a documentary in 1979.  Produced by Shirley Broughton, the event was originally filmed by Pennebaker.  The footage was then filed and rendered unusable.  Hegedus met Pennebaker a few years later, and the two edited the final version of the film for its release in 1979.  Pennebaker described his filming style as one that exists without labels, in order to let the viewer come to a conclusion about the material, which inspired the nature of the "Town Bloody Hall" documentary.  The recording of the debate was intended to ensure the unbiased documentation, allowing it to become a concrete moment in feminist history.

Panel Syndicate: Panel Syndicate is an online publisher of DRM-free pay what you want webcomics in multiple languages, founded by Marcos Martín to publish his and Brian K. Vaughan's creator-owned comic "The Private Eye" in March 2013.  To date Panel Syndicate has published comics in English, Spanish, Catalan, Portuguese, and French, with additional languages in development.  "The Private Eye" has received critical acclaim and media attention for its role as one of the first DRM-free, pay what you want comics by creators of Martín and Vaughan's caliber.  Initially an outlet for publishing Vaughan and Martín's collaborations, Panel Syndicate is open to publishing other creators' works by using the same DRM-free, pay what you want model.

United Nations Security Council Resolution 1499: United Nations Security Council resolution 1499, adopted unanimously on 13 August 2003, after recalling previous resolutions on the situation in the Democratic Republic of the Congo, including resolutions 1457 (2003) and 1493 (2003), the Council extended the mandate of a panel investigating the plundering of natural resources in the country until 31 October 2003.

Virginia Tech shooting: The Virginia Tech shooting, also known as the Virginia Tech massacre, occurred on April 16, 2007, on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Virginia, United States.  Seung-Hui Cho, a senior at Virginia Tech, shot and killed 32 people and wounded 17 others in two separate attacks (another six people were injured escaping from classroom windows), approximately two hours apart, before committing suicide.

Roger Depue: Roger Depue is a 21-year veteran of the Federal Bureau of Investigation (FBI), where he served as Unit Chief for the Behavioral Science Unit at the FBI Academy at Quantico, Virginia.  Following retirement Depue founded The Academy Group, Inc (AGI).  He served on the panel investigating the Virginia Tech shooting and its handling by the University.  He spoke at length about the report at a press conference on August 30, 2007.  Depue is the coauthor of "Between Good and Evil: A Master Profiler's Hunt for Society's Most Violent Predators".

Attacks at Fort Blue Mounds: The attacks at Fort Blue Mounds were two separate incidents which occurred on June 6 and 20, 1832, as part of the Black Hawk War.  In the first incident, area residents attributed the killing of a miner to a band of Ho-Chunk warriors, and concluded that more Ho-Chunk planned to join Black Hawk in his war against white settlers.  The second incident occurred east of the fort as a Sauk raiding party, estimated by eyewitnesses to be as large as 100 warriors, attacked two militiamen who were investigating noises heard the night before.  Two members of the militia stationed at Blue Mounds were killed in the attack, and both their bodies were badly mutilated.

Supporting paragraphs: Roger Depue Virginia Tech shooting
Answer: April 16, 2007