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Context of 'October 2, 2001-Mid-December, 2001: Specialists Take Air Samples One Mile North of Ground Zero'

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Dell Dailey.Dell Dailey. [Source: US Department of State]Members of the Joint Special Operations Command (JSOC)—the nation’s “top counterterrorism unit”—are away from America when it comes under terrorist attack, participating in a training exercise in Hungary. [Naylor, 2015, pp. ix-x; Newsweek, 9/11/2015] The highly classified exercise, called Jackal Cave, is one of several joint readiness exercises that JSOC conducts each year. It is part of a larger exercise, called Ellipse Bravo, run by the US military’s European Command (see (After 9:03 a.m.) September 11, 2001). [Arkin, 2005, pp. 358-359; Naylor, 2015, pp. ix] Jackal Cave involves participants tracking down a hypothetical hybrid force made up of terrorists and elements of international organized crime who are trafficking in weapons of mass destruction. “We were tracking ‘terrorists,’” a JSOC staff officer will later comment. “[A]nd then [we’d] bring an assault element in to take the target down.” Details of the mock terrorists in the exercise are unclear, but they are not Islamists, according to journalist and author Sean Naylor. [Naylor, 2015, pp. x, 441]
JSOC and Delta Force Are Participating in the Exercise - Jackal Cave involves over 500 personnel, 62 aircraft, and 420 tons of cargo. [Arkin, 2005, pp. 404] Hundreds of JSOC personnel are taking part. [Naylor, 2015, pp. 85] JSOC, based at Fort Bragg and Pope Air Force Base in North Carolina, is responsible for conducting the US military’s most sensitive counterterrorism missions. [New York Times, 9/3/2002; GlobalSecurity (.org), 6/24/2013] Its headquarters for the exercise is divided between Taszár Air Base, about 120 miles southwest of Budapest, Hungary, and Tuzla, Bosnia. A squadron from the US Army’s Delta Force is also participating in the exercise. [Fury, 2008, pp. 56; Saratogian, 9/10/2011; Naylor, 2015, pp. x] Delta Force is designed to be an overseas counterterrorist unit and specializes in hostage rescue, barricade operations, and reconnaissance. [GlobalSecurity (.org), 6/24/2013] Its personnel are trained in dealing with terrorist situations in buildings and hijacked aircraft, among other things. [Discovery Channel, 12/1/2001; Haney, 2002, pp. 213; Schading and Schading, 2006, pp. 156]
Mock Terrorists Are Played by US Military Personnel - Others taking part in Jackal Cave include members of the US Army’s 10th Special Forces Group, members of the Department of Energy’s Nuclear Emergency Search Team (see (September 10-15, 2001)), and some Hungarian military elements. [Richelson, 2009, pp. 178; Jeffrey T. Richelson, 1/23/2009; Naylor, 2015, pp. x] The terrorists in the exercise are being played by operatives from the Defense HUMINT Service—the US Defense Department’s clandestine spy network. Members of the US Navy’s SEAL Team Six are also taking part and are in the port of Dubrovnik, Croatia, from where the hypothetical enemy is trying to ship nuclear material out on a boat. The SEALs are going to be flown by helicopter to assault the boat in the Mediterranean Ocean.
JSOC Commander Learns of the Attacks in the US and Cancels the Exercise - At the time the attacks on the World Trade Center take place, Jackal Cave has barely started. One or two Delta Force staffers and some operatives with the Operational Support Troop—Delta Force’s in-house intelligence arm—are out tracking the mock terrorists through downtown Budapest. Meanwhile, Major General Dell Dailey, head of JSOC, is at the US embassy in Budapest, where he has been briefing senior officials on the exercise. He learns about the attacks on the WTC after leaving the briefing with his senior enlisted adviser, Army Command Sergeant Major Mike Hall. Major Jim Reese, a Delta Force officer, sees the coverage of the burning Twin Towers on television and then runs after the two men. He tells Dailey, “Hey sir, you need to see this.” Dailey quickly walks to his operations center at the embassy and sees the coverage of the attacks on TV. He then answers a phone call from his boss, Air Force General Charles Holland, head of US Special Operations Command at MacDill Air Force Base in Tampa, Florida. Holland tells him to abandon the exercise and return to the US as quickly as possible. After hanging up, Dailey turns to Reese and Lieutenant Colonel Scott Miller, another Delta Force officer, and says he is canceling the exercise immediately and returning to the US, and they should get back to the US too. However, as America’s airspace is closed to international commercial flights for several days following today’s attacks, it will take almost a week for the JSOC personnel who are in Europe for the exercise to return to America. [Naylor, 2015, pp. ix-xiii, 85]

Entity Tags: 1st Special Forces Operational Detachment--Delta, Jackal Cave, Charles Holland, Dell L. Dailey, Scott Miller, 10th Special Forces Group, Navy Seals, Jim Reese, Nuclear Emergency Search Team, Joint Special Operations Command, Defense HUMINT Service, Mike Hall (US Army)

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

A team of specialists from UC Davis, known as the Detection and Evaluation of Long-range Transport of Aerosols (DELTA) Group, conducts air sampling from the roof of 201 Varick St., located one mile north-northeast of the WTC site, at the request of the Department of Energy. Regional meteorology will suggest that the monitoring equipment’s location at Varick Street probably receives material from the World Trade Center site about half the time. The group’s analysts use seven different techniques to analyze the data including synchrotron-induced X-ray fluorescence, scanning transmission ion microscopy and proton elastic scattering analysis, and soft beta mass measurements and scanning electron microscopy (SEM). DELTA will examine the samples for dozens of substances including carbon-based compounds from burning wood, plastic and carpets; glass shards; and asbestos. DELTA will release summary reports in December (see Early November 2001) and February (see February 11, 2002). [JOM, 12/1/2001; Dateline (Univ of Calif, Davis), 2/15/2002; Chemical and Engineering News, 2/18/2002]

Entity Tags: US Department of Energy, DELTA Group

Timeline Tags: Environmental Impact of 9/11

A team of specialists from UC Davis, the Detection and Evaluation of Long-range Transport of Aerosols (DELTA) Group, sends the results from their first samples (see October 2, 2001-Mid-December, 2001) to the Lawrence Berkeley National Laboratory’s Advanced Light-Source Lab. Since October 2, the group has been conducting air sampling from the roof of 201 Varick St., located one mile north-northeast of the WTC site, at the request of the Department of Energy. According to the team, data indicates that the WTC plume “in many ways [resembles] those seen from municipal waste incinerators and high temperatures processes in coal-fired power plants.” A summary report of the data concludes: “The size fractions above 1 micrometer contained finely powdered concrete gypsum, and glass, with soot-like coatings and anthropogenic metals, but little asbestos. Composition in the very fine size range (0.26 > Dp > 0.09) was dominated by sulfuric acid and organic matter, but, including polycyclic aromatic hydrocarbons (PAHs) and their derivatives, and glasslike silicone containing aerosols.” [JOM, 12/1/2001; Dateline (Univ of Calif, Davis), 2/15/2002; Chemical and Engineering News, 2/18/2002]

Entity Tags: DELTA Group, US Department of Energy, Thomas Cahill

Timeline Tags: Environmental Impact of 9/11

The Delta Group releases a final report on air quality data collected in Manhattan between October and December, 2001 (see October 2, 2001-Mid-December, 2001). Thomas Cahill, PhD, Delta Group member, is a noted expert on composition and transport of ultra-fine airborne particles. Dr. Cahill explains that World Trade Center aerosols contained high levels of sulfur, sulfur-based compounds, and very fine silicon that probably came from the thousands of tons of glass that had been in the WTC buildings. The presence of these fine particles decreased during the month of October. The largest spike in very fine particle levels measured 58 micrograms per cubic meter which Cahill says was “an extremely high peak.” The sampling also indicated that there were almost always high concentrations of coarse particles—those about 12 micrometers to 5 micrometers in diameter—present in the air near the WTC site. “These particles simply should not be there,” Cahill says. “It had rained, sometimes heavily, on six days in the prior three weeks. That rain should have settled these coarse particles.” He says their presence suggests the hot debris pile was continually generating the larger particles. The study also determined the chemical composition of the dust it sampled. Some of the metals found in the air occurred at the highest levels ever recorded in the United States. Metals present at high levels included iron, titanium (some associated with powdered concrete), vanadium and nickel (often associated with fuel-oil combustion), copper and zinc. Mercury, lead, and asbestos were present at low levels. [On Earth, 2002; Dateline (Univ of Calif, Davis), 2/15/2002; Chemical and Engineering News, 2/18/2002]

Entity Tags: DELTA Group, Thomas Cahill

Timeline Tags: Environmental Impact of 9/11

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